Dissertations / Theses on the topic 'GP9'
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Balaji, Chandra Sekhar Sinhadri [Verfasser]. "Expression and characterization of spike protein complexes Gp2/Gp3/Gp4 and Gp5/M of the Arterivirus / Sekhar Sinhadri Balaji Chandra." Berlin : Freie Universität Berlin, 2015. http://d-nb.info/1071843435/34.
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Srnec, Erik. "Výpočet optického pole v GP-GPU." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2012. http://www.nusl.cz/ntk/nusl-235472.
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This work describes a relatively new technique designed to write highly parallel programs, that name is OpenCL. It is intended for both GPU and CPU and other parallel processors. Libraries used by the processor architecture, which includes a large number of small cores. These cores are not as comprehensive as conventional processors and is therefore suitable for calculations, which are many and they are simple. It is this property could, under certain conditions, accelerate the calculation of the hologram, namely the calculation of the optical field. While the calculation itself is simple, but the amount of processed data is large and therefore slow. The work also contain the basic concepts of explanation of optical and digital holography.
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Kula, Michal. "Algoritmy grafiky a video v GP-GPU." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236364.
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This diploma thesis is focused on object detections through general-purpose computing on graphics processor units. There is an explanation of graphics adapters work and basics of their architecture in this thesis. Based on the adapters, there is the effective work in libraries for general-purpose computing on graphics processor units demonstrated in this thesis. Further, the thesis shows the available algorithms for object detection and which ones from them are possible to be effectively parallelized. In conclusion of this thesis, there is a comparison of the object detections speeds to common implementations on classical processors.
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Nottingham, Alastair. "GPF : a framework for general packet classification on GPU co-processors." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1006662.
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This thesis explores the design and experimental implementation of GPF, a novel protocol-independent, multi-match packet classification framework. This framework is targeted and optimised for flexible, efficient execution on NVIDIA GPU platforms through the CUDA API, but should not be difficult to port to other platforms, such as OpenCL, in the future. GPF was conceived and developed in order to accelerate classification of large packet capture files, such as those collected by Network Telescopes. It uses a multiphase SIMD classification process which exploits both the parallelism of packet sets and the redundancy in filter programs, in order to classify packet captures against multiple filters at extremely high rates. The resultant framework - comprised of classification, compilation and buffering components - efficiently leverages GPU resources to classify arbitrary protocols, and return multiple filter results for each packet. The classification functions described were verified and evaluated by testing an experimental prototype implementation against several filter programs, of varying complexity, on devices from three GPU platform generations. In addition to the significant speedup achieved in processing results, analysis indicates that the prototype classification functions perform predictably, and scale linearly with respect to both packet count and filter complexity. Furthermore, classification throughput (packets/s) remained essentially constant regardless of the underlying packet data, and thus the effective data rate when classifying a particular filter was heavily influenced by the average size of packets in the processed capture. For example: in the trivial case of classifying all IPv4 packets ranging in size from 70 bytes to 1KB, the observed data rate achieved by the GPU classification kernels ranged from 60Gbps to 900Gbps on a GTX 275, and from 220Gbps to 3.3Tbps on a GTX 480. In the less trivial case of identifying all ARP, TCP, UDP and ICMP packets for both IPv4 and IPv6 protocols, the effective data rates ranged from 15Gbps to 220Gbps (GTX 275), and from 50Gbps to 740Gbps (GTX 480), for 70B and 1KB packets respectively.LaTeX with hyperref package
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Cellier, Fabien. "Modélisation et calcul parallèle pour le Web SIG 3D." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10015/document.
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Cette thèse est centrée sur l'affichage et la manipulation en temps interactif au sein d'un navigateur Internet de modèles 3D issus de Systèmes d'Informations Géographiques (SIG). Ses principales contributions sont la visualisation de terrains 3D haute résolution, la simplification de maillages irréguliers sur GPU, et la création d'une nouvelle API navigateur permettant de réaliser des traitements lourds et efficaces (parallélisme GP/GPU) sans compromettre la sécurité. La première approche proposée pour la visualisation de modèles de terrain s'appuie sur les récents efforts des navigateurs pour devenir une plateforme versatile. Grâce aux nouvelles API 3D sans plugin, nous avons pu créer un client de visualisation de terrains "streamés" à travers HTTP. Celui-ci s'intègre parfaitement dans les écosystèmes Web-SIG actuels (desktop et mobile) par l'utilisation des protocoles standards du domaine (fournis par l'OGC, Open Geospatial Consortium). Ce prototype s'inscrit dans le cadre des partenariats industriels entre ATOS Worldline et ses clients SIG, et notamment l'IGN (institut national de l'information géographique et forestière) avec le Géoportail (http://www.geoportail.gouv.fr) et ses API cartographiques. La 3D dans les navigateurs possède ses propres défis, qui sont différents de ce que l'on connaît des applications lourdes : aux problèmes de transfert de données s'ajoutent les restrictions et contraintes du JavaScript. Ces contraintes, détaillées dans le paragraphe suivant, nous ont poussé à repenser les algorithmes de référence de visualisation de terrain afin de prendre en compte les spécificités dues aux navigateurs. Ainsi, nous avons su profiter de la latence du réseau pour gérer dynamiquement les liaisons entre les parties du maillage sans impacter significativement la vitesse du rendu. Au-delà de la visualisation 3D, et bien que le langage JavaScript autorise le parallélisme de tâches, le parallélisme de données reste quasi inexistant au sein des navigateurs Web. Ce constat, couplé à la faiblesse de traitement du JavaScript, constituait un frein majeur dans notre objectif de définir une plateforme SIG complète et performante intégrée au navigateur. C'est pour cette raison que nous avons conçu et développé, à travers les WebCLWorkers, une API Web de calcul GP/GPU haute performance répondant aux critères de simplicité et de sécurité inhérents au Web. Contrairement à l'existant, qui se base sur des codes déjà précompilés ou met de côté les performances, nous avons tenté de trouver le bon compromis pour avoir un langage proche du script mais sécurisé et performant, en utilisant les API OpenCL comme moteur d'exécution. Notre proposition d'API a intéressé la fondation Mozilla qui nous a ensuite demandé de participer à l'élaboration du standard WebCL dans la cadre du groupe Khronos, (aux côtés de Mozilla mais aussi de Samsung, Nokia, Google, AMD, etc.). Grâce aux nouvelles ressources de calcul ainsi obtenues, nous avons alors proposé un algorithme de simplification parallèle de maillages irréguliers. Alors que l'état de l'art repose essentiellement sur des grilles régulières pour le parallélisme (hors Web) ou sur la simplification via clusterisation et kd-tree, aucune solution ne permettait d'avoir à la fois une simplification parallèle et des modèles intermédiaires utilisables pour la visualisation progressive en utilisant des grilles irrégulières. Notre solution repose sur un algorithme en trois étapes utilisant des priorités implicites et des minima locaux afin de réaliser la simplification, et dont le degré de parallélisme est linéairement lié au nombre de points et de triangles du maillage à traiter [etc...]GP/GPUThis thesis focuses on displaying and manipulating 3D models from Geographic Information Systems (GIS) in interactive time directly in a web browser. Its main contributions are the visualization of high resolution 3D terrains, the simplification of irregular meshes on the GPU, and the creation of a new API for performing heavy and effective computing in the browser (parallelism GP/GPU) without compromising safety. The first approach proposed for the visualization of terrain models is built on recent browsers efforts to become a versatile platform. With the new 3D pluginless APIs, we have created a visualization client for terrain models “streamed” through HTTP. It fits perfectly into the current Web-GIS ecosystem (desktop and mobile) by the use of the standard protocols provided by OGC Open Geospatial Consortium. This prototype is part of an industrial partnership between ATOS Wordline and its GIS customer, and particularly the IGN (French National Geographic Institute) with the Geoportail application (http://www.geoportail.gouv.fr) and its mapping APIs. The 3D embedded in browsers brings its own challenges which are different from what we know in heavy applications: restrictions and constraints from JavaScript but also problems of data transfer. These constraints, detailed in the next paragraph, led us to rethink the standard algorithms for 3D visualization to take into account the browser specificities. Thus, we have taken advantage of network latency to dynamically manage the connections between the different parts of the mesh without significantly impacting the rendering speed. Beyond 3D visualization, and even if the JavaScript language allows task parallelism, data parallelism remains absent from Web browsers. This observation, added to the slowness of JavaScript processing, constituted a major obstacle in our goal to define a complete and powerful GIS platform integrated in the browser. That is why we have designed and developed the WebCLWorkers, a GP/GPU Web API for high performance computing that meets the criteria of simplicity and security inherent to the Web. We tried to find a trade-off for a language close to the script but secure and efficient, based on the OpenCL API at runtime. This approach is opposite to the existing ones, which are either based on precompiled code or disregard performances. Our API proposal interested the Mozilla Foundation which asked us to participate in the development of the WebCL standard by integrating the Khronos Group (Mozilla, Samsung, Nokia, Google, AMD, and so on). Exploiting these new computing resources, we then suggested an algorithm for parallel simplification of irregular meshes. While the state of the art was mainly based on regular grids for parallelism (and did not take into account Web browsers restrictions) or on simplification and kd-tree clustering, no solution could allow both parallel simplification and progressive visualization using irregular grids. Our solution is based on a three-step algorithm using implicit priorities and local minima to achieve simplification, and its degree of parallelism is linearly related to the number of points and triangles in the mesh to process. We have proposed in the thesis an innovative approach for 3D WebGIS pluglinless visualization, offering tools that bring to the browser a comfortable GP/GPU computing power, and designing a method for irregular meshes parallel simplification allowing to visualize level of details directly in Web browsers. Based on these initial results, it becomes possible to carry all the rich functionalities of desktop GIS clients to Web browsers, on PC as well as mobile phones and tablets
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Leksell, Torbjörn. "A Comparison of Smartphone GPSL1 and Galileo E1-B/C Spoofing Resilience." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292950.
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Location-based services have grown in importance as smartphones, and location-based applications have become an integral part of everyday life. While Global Navigation Satellite Systems (GNSSs) provide the most accurate position determination, open service GNSS signals remain unprotected and susceptible to spoofing attacks. Previous work within the domain highlighted this issue, with many smartphone receivers shown susceptible to GPS L1 spoofing, suggesting that their resilience experiments should be extended to include other GNSS signals in the future. Given that multi-GNSS receivers now have become the norm in smartphones, this thesis investigates whether smartphone GNSS receiver spoofing resilience depends on the type of signal; by conducting a series of comparative spoofing experiments involving GPS L1 and Galileo E1-B/C signals. To conduct the experiments, we developed a Galileo E1-B/C signal simulator that, together with the open-source GPS-SDR-SIM signal simulator, was the basis for conducting a series of experiments designed to identify the potential presence of anti-spoofing measures. The result of our experiments indicates that smartphone multi-GNSS receivers were significantly more resilient towards Galileo E1-B/C spoofing attacks, often accepting GPS L1 signals with significant position, time, and data errors, while refusing to accept corresponding Galileo E1-B/C signals. While we never observed cases of E1-B/C signals being accepted while rejecting GPS L1 signals, external factors limited the scope of the investigation and do not allow a generalized conclusion. As such, to deepen our understanding of these issues and how they relate to the development of anti-spoofing measures and trust in different signals, it is essential to extend this research to include more devices and other GNSS signals.Positionstjänster har växt i betydelse allteftersom smarttelefoner och positionsapplikationer har blivit en integral del av våran vardag. Även om satellitpositionering utger det mest precisa och vedertagna positionsbestämningen av tillgängliga positionstjänser så är de publika satellitnavigeringssignalarna oskyddade och sårbara för förfalskningsattacker. Tidigare forskning inom området har evaluerat dessa sårbarheter och visat att ett betydande antal smarttelefoner var sårbara för GPS-L1 förfalskningsattacker och att denna forskning borde utökas i framtiden allteftersom satellitnavigeringsmottagare med förmåga att mottaga olika satellitsignaler integreras i smarttelefoner. Givet att en majoritet av nya smarttelefoner nu integrerar denna typ av mottagare så utvärderar detta arbete hur sårbarheten mot förfalskningsattacker beror på typ av satellitsignal genom en komparativ jämförelse av sårbarhet mellan GPS-L1 och den nyare Galileo E1-B/C signalen. För att genomföra utvärderingen så utvecklade vi en Galileo E1-B/C signalsimulator som tillsammans med GPS-L1 signalsimulatorn (GPS-SDR-SIM) utgjorde grunden för en serie av experiment designade för att identifiera och utvärdera sårbarheter och potentiella motåtgärder i smarttelefoner. Våra resultat indikerar att smarttelefoner är betydligt mer sårbara for GPS-L1 forfalskningsattacker då de accepterade GPS-L1 signaler med betydande position, tid, och datafel medans motsvarande Galileo E1-B/C signaler ej accepterades. Trots resultaten så är det viktigt att inte dra för starka slutsatser då underlaget var kraftigt begränsat givet rådande omständigheter (Covid), som gjorde det svårt/omöjligt att på ett säkert sätt samla volontärer med olika smarttelefoner för våra experiment. Därav så är det viktigt att i framtiden utöka arbetet med ett större underlag och fler signaltyper.
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De, Rocco Daniela, and Rocco Daniela De. "STUDIO CLINICO E MOLECOLARE DELLA SINDROME DI BERNARD-SOULIER." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10848.
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2013/20142013/2014
La sindrome di Bernard-Soulier (BSS) è una rara piastrinopenia ereditaria causata da alterazioni a livello del complesso glicoproteico GPIb-IX-V, presente sulla membrana piastrinica e responsabile della adesione delle piastrine in seguito a danno vascolare. La BSS si trasmette come malattia autosomica recessiva (BBSA1) e i pazienti affetti presentano piastrine giganti e severi episodi di sanguinamento. Tuttavia in tempi recenti sono state descritte delle famiglie con una forma dominante nota come BSSA2. In questi pazienti la piastrinopenia è moderata e le piastrine presentano un volume leggermente aumentato. Finora sono state individuate solo 5 varianti in eterozigosi nel BSSA2:, 4 nel gene GP1BA e 1 in GP1BB. Fatta eccezione per p.Ala172Val del gene GP1BA che è relativamente frequente nella la popolazione Italiana, le altre 4 sono state descritte in singole famiglie. I pochi casi di cui disponiamo, soprattutto per la forma recessiva non ci permettono di avere informazioni sui meccanismi patogenetici e sulla sua evoluzione nel tempo. Per questo motivo è stato istituito un Consorzio Internazionale per lo studio della BSS grazie al quale è stato possibile raccogliere i dati clinici e molecolari di 132 famiglie. Tutte le informazioni sono state inserite in un database (BSS Consortium database) attualmente gestito dal nostro laboratorio e consultabile dai gruppi di studio che hanno aderito al Consorzio. Inoltre per aumentare le informazioni sulle varianti identificate nel BSSA1 abbiamo incrementato i dati molecolari delle famiglie del Consorzio con i dati di altre 79 famiglie descritte in letteratura, raggiungendo un totale di 211 famiglie. Tutte le mutazioni identificate in queste famiglie sono state poi inserite in un database pubblico disponibile in rete (LOVD: Leiden Open Variation Database). La raccolta e l’elaborazione dei dati ci ha permesso di chiarire alcuni aspetti clinici e molecolari della malattia. Tuttavia data l’eterogeneità genetica e l’elevata espressione fenotipica gli studi genotipo-fenotipo si sono rivelati difficili da eseguire. Nonostante le molte informazioni acquisite, il database risulta ancora incompleto e limitato; per questo motivo è necessario raccogliere nuovi casi e inserire assieme alle varianti anche i relativi studi funzionali che si rivelano indispensabili per poter definire l’effetto delle varianti sul complesso GPIb-IX-V. Nell’ambito invece dello studio e caratterizzazione della forma meno grave di BSS (BSSA2) sono stati selezionati 120 pazienti piastrinopenici senza diagnosi caratterizzati da piastrine grandi. In questi pazienti sono stati analizzati i geni GP1BA, GP1BB e GP9 e sono state identificate 11 diverse varianti: 1 nonsense, 2 mutazioni di framshift, 1 mutazione nel codone di inizio e 5 varianti missense. Gli studi funzionali eseguiti sulle varianti missense per stabilire il loro ruolo patogenetico sono ancora in corso. Tuttavia se gli studi dovessero confermare la loro patogenicità 11 pazienti su 120 risulterebbero BSSA2 e questa forma dovrebbe essere considerata una tra le piastrinopenie ereditarie più frequenti in Italia. In conclusione grazie a questo studio è stato possibile raccogliere la più ampia casistica di pazienti affetti da BSSA1 fin’ora descritta e ottenere numerose informazioni sia sulla clinica che sulle mutazioni coinvolte. Il BSS Consortium database permetterà ai clinici che hanno partecipato allo studio di osservare nel tempo l’andamento della malattia nei pazienti e di ottenere informazioni utili per stabilire un corretto protocollo per la presa in carico dei pazienti. Infine la caratterizzazione di nuove forme di BSSA2 rappresenta il punto di partenza per descrivere al meglio la malattia BSSA2 sia dal punto di vista clinico che molecolare. In futuro sarà quindi indispensabile estendere il BSS Consortium database anche alla forma BSSA2.
XXVII Ciclo
XXVII Ciclo
1979
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RAHUEL, CECILE. "Etude de la famille de genes codant pour les glycophorines a, b et e humaines : analyses structurales et bases moleculaires de la regulation transcriptionnelle et post-transcriptionnelle de l'expression des genes gpa, gpb et gpe." Paris 7, 1998. http://www.theses.fr/1998PA077133.
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Les glycophorines a (gpa) et b (gpb) sont les sialoglycoproteines majeures de la membrane du globule rouge. Elles portent respectivement les antigenes de groupe sanguin mn et ss. Nous avons etudie la structure des genes gpa et gpb, et mis en evidence un troisieme gene, gpe, membre de la meme famille. Les trois genes sont organises dans le sens 5 gpa-gpb-gpe 3, et definissent le locus gyp situe sur le chromosome 4, en position q28-31. Les genes sont extremement homologues entre eux, sauf pour les parties 3 non-codantes des genes gpb et gpe qui divergent completement de la sequence 3 non-codante du gene gpa. Cette divergence est due a une recombinaison entre des sequences alu apres duplication du gene gpa ancestral. Nous avons clone et analyse les sequences promotrices des trois genes sur 350 nt en amont du site d'initiation de la transcription, et montre qu'elles ne presentent que quelques mutations ponctuelles les unes par rapport aux autres. Nous avons mis en evidence que ces divergences n'influaient pas sur les taux de transcription des trois genes tout-a-fait comparables entre eux. Par contre, nous avons montre que des differences de stabilite des arn messagers correspondant aux trois genes peuvent rendre compte des differents taux d'arnm et des differences d'expression des glycophorines abe sur la membrane erythrocytaire. Nous avons analyse de maniere detaillee le promoteur gpb, et mis en evidence les sequences en cis, et les facteurs en trans impliques dans l'initiation de la transcription, le niveau d'expression et la specificite erythroide de l'expression du gene. Cette derniere analyse nous a permis de definir un modele de regulation, ou un represseur inhibe la transcription du gene dans les tissus non erythroides, et ou hgata-1, un facteur erythroide, deplace le facteur inhibiteur par competition et leve ainsi la repression dans les tissus erythroides.
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Ludvíček, Pavel. "Pokročilé metody řízení trajektorie modelu stanice v prostředí OPNET Modeler." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219354.
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The aim of this work is to study and theoretically process existing movement options of station in OPNET Modeler environment. These options are described in first part. Furthermore to design and implement function to display path obtained from real-world conditions and done to station following this route during simulation. Coordinates used to move station are obtained by GPX format, which is used to store clearly the GPS coordinates. Second part is devoted to describing creation of this function, first using PHP script, then direct implementation into OPNET Modeler environment using C++.
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Thomopulos, Nikos. "Sviluppo e sperimentazione di algoritmi per la soluzione di sistemi lineari su GP-GPU." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
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Gli ultimi anni hanno visto un incremento rilevante nella diffusione e utilizzo delle General Purpose Graphics Processing Unit (GP-GPU), unità di elaborazione grafica ad elevate performance. Tale diffusione è principalmente dovuta al vantaggioso rapporto tra la capacità computazione offerta da questi device ed il loro costo.
Molto diffusi sono anche i problemi con sistemi lineari di grandi dimensioni, specialmente in ambito scientifico, e richiedono grandi capacità di calcolo per essere risolti in tempi brevi. Grazie alle loro performance computazionali le GP-GPU possono essere usate per velocizzare la soluzione di questi sistemi.
In questo trattato si vuole sviluppare algoritmi per la soluzione di sistemi lineari che lavorino su Graphics Processing Unit (GPU) e sperimentarne le performance confrontandole con algoritmi preesistenti. L’obbiettivo è la realizzazione di soluzioni per applicazioni High Performance Computing (HPC) in grado di avvantaggiarsi significativamente della potenza di calcolo aggiuntiva fornita dalle GPU cosicché riescano ad ottenere miglioramenti significativi in termini di performance rispetto alle tradizionali applicazioni per CPU in problemi applicativi reali: la soluzione di piccoli e grandi sistemi lineari.
La tesi proposta è incentrata sull’implementazione di algoritmi basati sull’Inhibition Method. La tecnologia utilizzata per lo sviluppo e il testing delle implementazioni è la Compute Unified Device Architecture (CUDA), attualmente la tecnologia maggiormente impiegata da chi lavora nell’ambito GP-GPU.
In particolare, mostrerò il funzionamento di CUDA, i suoi punti di forza e di debolezza e come poter trarre vantaggio dal suo utilizzo nonché le strategie che conviene adottare per impiegarne al meglio le risorse e sfruttare al massimo le capacità. Presenterò dunque diverse implementazioni di algoritmi per la soluzione di sistemi lineari in svariate versioni e le confronterò con lo stato dell’arte per verificarne la validità.
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Kodeš, Daniel. "Aplikace pro geotagging fotografií." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-412836.
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This master thesis describes development of Photography Geotagging Application from an introduction to the issues, through the analysis and design to the resulting implementation. The reader should be able understand to issues of time in geotagging using the GPS tracks records. He will also understand where and how metadata are stored. The big part of thesis is dedicated to the implementation of application which leads the reader through building the application architecture, the photography representation and loading their metadata with program ExifTool. Gradually will be explained the convertors of coordinates and GPS track parsers, which are used to synchronization. The final application allows the user synchronize photography with GPS track and display them on the map.
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Bailey, Alfred Dunlop. "Alligators, Buffaloes, and Bushmasters : the history of the development of the LVT through World War II /." Washington, D.C. : History and Museums Division, Headquarters, U.S. Marine Corps : Copies from Marine Corps Historical Center (Code HDS), 1986. http://purl.access.gpo.gov/GPO/LPS98777.
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Thesis (M.A.)--University of Utah, 1976.Includes bibliographical references (p. 268-271). Also available via Internet from the Marines web site. Address as of 7/30/08: http://www.marines.mil/news/publications/Documents/ALLIGATORS,%20BUFFALOES,%20AND%20BUSHMASTERS%20%20PCN%2019000319000.pdf; current access available via PURL.
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Ottke, Doug. "An environmental history of the 19th century Marquette Iron Range." Reston, Va. : U.S. Geological Survey, 2000. http://purl.access.gpo.gov/GPO/LPS10143.
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Johansson, Mattias. "Estimering av GPS pålitlighet och GPS/INS fusion." Thesis, Uppsala universitet, Signaler och System, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203171.
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The global Positioning System (GPS) provides location and time information as long as there are unobstructed lines of sight to four or more GPS satellites. However, when this is not the case the signal may be inaccurate or sometimes even completely blocked. In these situations the Inertial Navigation System (INS) is an appropriate choice for positioning. An INS has already been proposed in a previous thesis by Erik Andersson and the objective of this thesis is to fuse the GPS with the INS in a proper way. A part of this project is to decide the reliability of the GPS.Three methods for GPS reliability detection have been proposed. One method based on the statistical properties of each of the separate systems, and two methods based on the statistical properties of the residuals between the GPS and INS. Two methods for GPS/INS integration have been proposed. One method based on a bank of parallel running Kalman filters and one method based on an adaptive observer.The method based on Kalman filter diverged. By adding a state that was suppose to represent the bias of the noise an attempt was to fix this problem made. The filter still diverged and was not examined any further. Among the other two algorithms did the one that uses both magnetometer and gyroscope presents a better result than the one that uses only gyroscope. However, the result differences between the two algorithms were not big and the result may change if a better INS is used.
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Hackl, Matthias. "GPS analysis." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-146274.
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Härberg, Martin, and Roberto Chiarito. "GPS Experimentet." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199272.
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Слюзар, Роман Сергійович, and Roman Slyuzar. "GPS приймач." Bachelor's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/35612.
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Розроблено структурну схему GPS приймача, на основі якої розроблено схему електричну принципову. Проведено розрахунок схеми електричної принципової приладу. Розроблено друковану плату та друкований вузол. Основні техніко-експлуатаційні характеристики: тип приймача – 12 паралельних каналів L1 C/A код, точність визначення місцеположення – 5 м, повторне захоплення сигналу – через 1 сек, чутливість – 137-145дБм, протокол – NMEA-0183, версія 3.01 9600 бод, 8N1, напруга живлення – 12-15 В, можливість підключення до ПК – через Com-портThe structural scheme of the GPS receiver is developed, on the basis of which the electric basic scheme is developed. The calculation of the scheme of the electric principle device is carried out. A printed circuit board and a printed circuit board have been developed. Main technical and operational characteristics: type of receiver - 12 parallel channels L1 C / A code, accuracy of positioning - 5 m, re-capture of the signal - after 1 sec, sensitivity - 137-145dBm, protocol - NMEA-0183, version 3.01 9600 baud, 8N1, supply voltage - 12-15 V, the ability to connect to a PC - via Com-port.
Перелік умовних позначень, символів, одиниць, скорочень і термінів 6 Вступ 7 1 Основна частина 8 1.1 Аналіз технічного завдання 8 1.1.1 Обґрунтування актуальності теми дипломного проекту 8 1.1.2 Аналіз інформації 14 1.2 Розробка структурної схеми пристрою 14 1.3 Проектування і розрахунок вузлів електричної принципової схеми пристрою 16 1.4 Вибір і обґрунтування компонентної бази 22 1.5 Компоновка друкованого вузла пристрою 29 1.5.1 Розробка компоновки і конструкції друкованого вузла 29 1.5.2 Оптимізація компоновки, друкованого вузла 34 1.5.3 Розрахунок і забезпечення вимог по надійності 40 1.6 Висновок до розділу 1 45 2 Охорона праці та безпека життєдіяльності 46 2.1 Вплив шуму на організм людини та розробка заходів щодо його зниженню до допустимих величин 46 2.2 Організація управління ЦЗ та реагування на НС на підприємстві (цеху) відповідного профілю 50 2.3 Висновок до розділу 2 51 Висновки 52 Список використаних джерел 53 Додатки 55
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Григор'єв, Артем Сергійович. "GPS – трекер." Bachelor's thesis, Київ, 2019. https://ela.kpi.ua/handle/123456789/29485.
Full textAbstract:
Мета роботи – спроектувати та сконструювати макет GPS – трекера.
Отримати дані про місце знаходження приладу.
В дипломному проекті:
- розглянуто існуючі глобальні навігаційні супутникові системи;
- методи позиціювання об’єктів у просторі;
- наведені характеристики використаємо апаратури;
- приведено алгоритм роботи пристроїв позиціювання;
- наведені характеристики існуючих трекерів;
- розроблено корпус макету пристрою;
- виготовлено корпус макету пристрою;
- проведено випробування приладу;
Основою трекера було обрано GPS – модуль Ublox Neo 7m та плату Arduino
nano 328 p.Theme of the diploma project: "GPS - tracker". The diploma project consists of an explanatory note - 52 pages, drawings A1 - 1, posters A2 - 2. Number of sources by the list of references - 9. The purpose of the work is to design and construct a GPS tracker layout. Get the location of the device. In the diploma project: - Existing global satellite navigation systems are considered; - methods of positioning objects in space; - the above characteristics we use the equipment; - the algorithm of the positioning devices is shown; - characteristics of existing trackers are given; - The case layout of the device is developed; - the case of the layout of the device is made; - test of the device; The basis of the tracker was chosen GPS - the module Ublox Neo 7m and board Arduino nano 328 p.
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Madron, Tomáš. "Diferenciální GPS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217753.
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This master’s thesis is the design of the system of the differential GPS, creation of the software for basic wireless communication between 2 GPS receivers, and practical tests of the designed system. Parameters and characteristics of system were determined and they should inform us better about the appropriateness of the designed system for navigation of a mobile robot in outside conditions.
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Placuzzi, Andrea. "Integrazione dei formati di navigazione GPS standard in Alchemist." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14329/.
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Lo scopo di questa tesi è stata la reingegnerizzazione del modulo di Geographic Information System (GIS) di Alchemist, ovvero quella parte che si occupa di caricare ed utilizzare i dati di tipo geografico, come mappe terrestri e tracce GPS. L’obbiettivo primario di questo lavoro è stato creare una struttura in grado di garantire la possibilità di caricare le tracce GPS in vari formati. A tal scopo si è prodotto un caricatore di tracce che, applicando il pattern Strategy, delega il caricamento dei vari formati di tracce e l’allineamento dei tempi ad entità esterne al fine di massimizzare l’estendibilità. Infine per validare il modello e l’implementazione si sono prodotti dei test automatici.
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Wallerström, Mattias, and Fredrik Johnsson. "En nätverks-RTK-jämförelse mellan GPS och GPS/GLONASS." Thesis, University of Gävle, Department of Technology and Built Environment, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-130.
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Från den 1 april 2006 har SWEPOS kompletterat den befintliga nätverks-RTK-tjänsten, som dittills levererat RTK-data för GPS, med ett alternativ där RTK-data för GPS/GLONASS levereras. En del användare har rapporterat att de upplever att GPS/GLONASS inte tillför något och även att det ibland kan ta längre tid att få fixlösning. Andra användare hävdar att de nu kan använda nätverks-RTK på platser där de tidigare inte kunde mäta och är mycket positiva till GPS/GLONASS.
Syftet med detta examensarbete var att undersöka hur tillgängligheten för satellitmätning, positionsnoggrannheten och initialiseringstiden påverkades i öppna respektive störda miljöer med GPS/GLONASS jämfört med enbart GPS vid användandet av nätverks-RTK-tjänsten. Undersökningen har utförts med tre olika fabrikat av GNSS-mottagare (Leica, Topcon och Trimble), vilket även medger att en jämförelse mellan dessa till viss utsträckning kan göras.
I studien gjordes totalt 1 440 mätningar på sex punkter med kända positioner och med olika grad av sikthinder. Fixlösning uppnåddes inte inom 180 sekunder för 206 (77 för GPS/GLONASS och 129 för GPS) av de 1 440 mätningarna.
De extra GLONASS-satelliterna tillför en klar fördel när det gäller möjligheten att mäta i störda miljöer. När det gäller initialiseringstid så är dessa kortare för GPS/GLONASS. GLONASS-satelliterna ger ingen förbättring av positionsnoggrannheten. Det är till och med så att GPS får något bättre kvalitetstal i både plan och höjd i denna studie (1-3 mm bättre). För de olika fabrikaten kan det konstateras att precision och noggrannhet är likvärdiga i både plan och höjd för alla tre märken.
On the 1st of April 2006, SWEPOS complemented the existing network RTK service with corrections for the Russian satellite system GLONASS. The service had so far only provided corrections for GPS. Some users have claimed that GPS/GLONASS do not contribute at all and also that the time for initialization sometimes can be longer. However, other users insist on that they now can use network RTK in areas that earlier were impossible and they are very favourable of GPS/GLONASS.
The purposes of this diploma work were to study and examine measurements using GPS and GPS/GLONASS in areas with different degrees of visual obstacles. Corrections were provided by SWEPOS Network RTK service and availability of satellites, accuracy of position and time for initialization were evaluated. The study has been conducted with three different brands of GNSS receivers (Leica, Topcon and Trimble), which also to some extent makes a comparison between the three brands possible.
A total number of 1 440 field measurements were made on six well-known points with different degrees of visual obstacles. A fixed solution was not accomplished within 180 seconds for 206 (77 for GPS/GLONASS and 129 for GPS) of the 1 440 measurements.
The additional GLONASS satellites provide an apparent advantage regarding the possibility to measure in disturbed environments. The time for initialization is shorter for GPS/GLONASS. The GLONASS satellites do not give any improvement in accuracy of position. On the contrary, GPS receives slightly better accuracy numbers in quality for both horizontal and vertical readings (1-3 mm better). Regarding the different brands, it was found that the precision and accuracy were similar in both plane and height for all three brands.
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Yanggratoke, Rerngvit. "GPU Network Processing." Thesis, KTH, Telekommunikationssystem, TSLab, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103694.
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Networking technology is connecting more and more people around the world. It has become an essential part of our daily life. For this connectivity to be seamless, networks need to be fast. Nonetheless, rapid growth in network traffic and variety of communication protocols overwhelms the Central Processing Units (CPUs) processing packets in the networks. Existing solutions to this problem such as ASIC, FPGA, NPU, and TOE are not cost effective and easy to manage because they require special hardware and custom configurations. This thesis approaches the problem differently by offloading the network processing to off-the-shelf Graphic Processing Units (GPUs). The thesis's primary goal is to find out how the GPUs should be used for the offloading. The thesis follows the case study approach and the selected case studies are layer 2 Bloom filter forwarding and flow lookup in Openflow switch. Implementation alternatives and evaluation methodology are proposed for both of the case studies. Then, the prototype implementation for comparing between traditional CPU-only and GPU-offloading approach is developed and evaluated. The primary findings from this work are criteria of network processing functions suitable for GPU offloading and tradeoffs involved. The criteria are no inter-packet dependency, similar processing flows for all packets, and within-packet parallel processing opportunity. This offloading trades higher latency and memory consumption for higher throughput.Nätverksteknik ansluter fler och fler människor runt om i världen. Det har blivit en viktig del av vårt dagliga liv. För att denna anslutning skall vara sömlös, måste nätet vara snabbt. Den snabba tillväxten i nätverkstrafiken och olika kommunikationsprotokoll sätter stora krav på processorer som hanterar all trafik. Befintliga lösningar på detta problem, t.ex. ASIC, FPGA, NPU, och TOE är varken kostnadseffektivt eller lätta att hantera, eftersom de kräver speciell hårdvara och anpassade konfigurationer. Denna avhandling angriper problemet på ett annat sätt genom att avlasta nätverks processningen till grafikprocessorer som sitter i vanliga pc-grafikkort. Avhandlingen främsta mål är att ta reda på hur GPU bör användas för detta. Avhandlingen följer fallstudie modell och de valda fallen är lager 2 Bloom filter forwardering och ``flow lookup'' i Openflow switch. Implementerings alternativ och utvärderingsmetodik föreslås för både fallstudierna. Sedan utvecklas och utvärderas en prototyp för att jämföra mellan traditionell CPU- och GPU-offload. Det primära resultatet från detta arbete utgör kriterier för nätvärksprocessfunktioner lämpade för GPU offload och vilka kompromisser som måste göras. Kriterier är inget inter-paket beroende, liknande processflöde för alla paket. och möjlighet att köra fler processer på ett paket paralellt. GPU offloading ger ökad fördröjning och minneskonsumption till förmån för högre troughput.
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Zhang, Kewei. "Investigating GPS Vulnerabilty." Thesis, KTH, Kommunikationsnät, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-138988.
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The Global Position System (GPS) has become nearly mandatory in our daily life,like the Internet. Since it (the part for civilian use) is free, open and accurate,lots of applications have made our life more convenient and more effective, suchas the location-based applications for cell phones, tracking bulldozers, shippingcontainers, etc. GPS is becoming mature and rather accurate, but its securitycan’t be neglected since it is widely used in the world. RF interference can beclassified into: intentional and unintentional interference. There are lots of RF inour surroundings, whose frequency might be close to GPS frequency, could affectthe GPS accuracy, or even sometimes make it unavailable. This project, I analyzetwo types interferences, spoofing and jamming interference. I implement two attacks:a version of Cicada attack, to check how this specific attack affects GPS, and thedistance-deceasing attack, a special type of a relay attack (Early Detect(ED) attackand Late Commit(LC) attack). I find (i) that the Cicada attack, as implemented,is essentially equivalent to jamming, and (ii) how to set up the ED/LC attacks tosucceed (i.e., have low BER).
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Summerfield, Philip John. "Kinematic GPS surveying." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254471.
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Ciasulli, Lou. "GPS Imbedded Telemetry." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/611945.
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International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, CaliforniaThe Global Positioning System has achieved a maturity whereby a large marketplace of users have developed. This marketplace has been flooded with many types of receivers from a large number of manufacturers. The broad acceptance of the system among military as well as commercial users has created this market, and receiver availability due to planned mass production has precipitated substantial price reduction for GPS receivers. OEM receivers are presently available on the market at such a low cost that their incorporation into flight test systems should be seriously considered. The data produced by the system has a reasonable and usable accuracy for platform position, flight vectors and time. These are suitable in most range applications and can either augment or replace present tracking methods such as multilateration or triangulation for vehicle position. The advantages of eliminating the need for tracking functions in ground control stations are obvious especially in multi-vehicle operations such as in air-to-air weaponry testing and range training missions. The simplification of operation in position determination becomes especially desirable for over-the-horizon platforms. In this case, ground or airborne relays must be employed which complicates the location task by orders of magnitude.
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Backman, Fredrik, and Axel Vidmark. "The GPS Experiment." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199273.
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Straňák, Marek. "Raytracing na GPU." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-237020.
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Raytracing is a basic technique for displaying 3D objects. The goal of this thesis is to demonstrate the possibility of implementing raytracer using a programmable GPU. The algorithm and its modified version, implemented using "C for CUDA" language, are described. The raytracer is focused on displaying dynamic scenes. For this purpose the KD tree structure, bounding volume hierarchies and PBO transfer are used. To achieve realistic output, photon mapping was implemented.
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Polok, Lukáš. "WaldBoost na GPU." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-236790.
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Image recognition and machine vision in general is quickly evolving field, due boom of cheap and powerful computation technologies. Image recognition has many different applications in wide spectrum of industries, ranging from communications trough security to entertainment. Algorithms for image recognition are still evolving and are often quite computationaly demanding. That is why some of authors deal with implementing the algorithms on specialized hardware accelerators. This work describes implementation of image recognition using the WaldBoost algorithm on the graphic accelerator (GPU) platform.
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Ausejo, Ayra Allan Paul, Vilela Sofía Elizabeth Canales, Peña Javier Antonio Gabriel Sandoval, and Palacios Milton Minor Watanabe. "First Control - GPS." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626227.
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En la actualidad, Lima Metropolitana, como capital del Perú, viene sufriendo un aumento exhaustivo de criminalidad, en especial en los robos de vehículos. Como consecuencia, en el peor de los casos, arrastra con muertes de personas que opusieron resistencia ante estos delitos. Por ello, este trabajo de investigación, brinda la solución ante esta problemática, éste es un dispositivo GPS, que será instalado en cualquier unidad vehicular motorizada. Además, con la función de monitorear en tiempo real el vehículo desde cualquier Smartphone o PC, con la posibilidad de apagar la unidad con un comando especial enviado desde estos dispositivos. De esta manera, se evita llegar a la confrontación con el criminal a la hora de salvaguardar la inversión del cliente, ya que solo se tendrá que usar cualquier celular o pc para bloquear el vehículo.
El dispositivo GPS, será importado desde China y EEUU, de esta manera se aprovecharán los TLC vigentes. Actualmente, se cuentan con todos los permisos necesarios de las entidades correspondientes para su importación. Por ello, se brindará un equipo y servicio a bajo costo y único pago. Por consiguiente, éste llega a ser un producto muy competitivo a comparación de la competencia, ya que estos ofrecen servicios semejantes pero con pagos fijos mensuales.
Finalmente se estima que la utilidad generada será del 75% por cada dispositivo vendido. Esta es una solución eficaz ante la delincuencia, que ofrece un uso personalizado, autónomo y a un bajo precio.Currently, metropolitan Lima, as the capital of Peru, has been suffering an exhaustive increase in crime, especially in vehicle thefts. As a consequence, in the worst case, it leads to deaths of people who opposed resistance to these crimes. Therefore, this research work provides the solution to this problem, this is a GPS device, which will be installed in any motorized vehicle unit. In addition, with the function of monitoring in real time the vehicle from any Smartphone or PC, with the possibility of turning off the unit with a special command sent from these devices. In this way, you avoid getting confronted with the criminal when it comes to safeguarding the client's investment, since you only have to use any cell phone or PC to block the vehicle. The GPS device will be imported from China and the US, thus taking advantage of the current FTAs. Currently, they have all the necessary permits from the corresponding entities for their importation. Therefore, a team and service will be provided at a low cost and with a single payment. Therefore, it becomes a very competitive product compared to the competition, since they offer similar services but with fixed monthly payments. Finally, it is estimated that the generated profit will be 75% for each device sold. This is an effective solution to crime, which offers personalized, autonomous use at a low price.
Trabajo de investigación
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Cséfalvay, Gabriel. "Výukový GPS přijímač." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218323.
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This work explicates a simple GPS receiver intended for laboratory demonsration of DSSS signal demodulation and apparent distance measurement. The receiver will be able to seek for individual sattelite signals, measure their shift against local oscillator, demodulate navigational data, display information on LCD and communicate with PC via USB.
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Hort, Marek. "Konstrukce GPS přístroje." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218691.
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Aim of this Diploma thesis was to create a device capable of receiving navigational data from GPS. These data are subsequently stored in fixed memory and after connection with the PC are displayed it on the satellite map. The device was realized by using FPGA and GPS module LEA-5s. Description was created in the VHDL language, which was implemented into the circuit. The part of VHDL design was description of PICOBLAZE processor that controls whole system. For displaying and archiving data stored in device was created PC application GPS TRACER. It is able to display stored trace on the satellite map by using Google maps server. For created device were designed and manufactured PCBs, which were manually fitted.
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Hlaváč, Libor. "Konstrukce GPS přístroje." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218692.
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The goal of this thesis is a complete design and realization of a device that is able to communicate with GPS module iTrax300 and display the coordinates received from the module. The thesis deals with the GPS, localization principles and the standard communication protocol for navigation systems - the NMEA 0183 protocol. Futhermore it is dealing with the particular steps in the realization of the engineered device (from the specification of requirements at the beginning to the testing of its functionality in the end). The GPS coordinates, the Coordinated Universal Time (UTC), the date, the altitude and the speed on the ground can be displayed. There is also a possibility to put in any coordinates, the direction and the distance to the point are displayed afterwards. The device enables the track storage in the memory as well. The track is viewable while connecting the device and the PC through the USB interface.
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Dollinger, Jean-François. "A framework for efficient execution on GPU and CPU+GPU systems." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAD019/document.
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Les verrous technologiques rencontrés par les fabricants de semi-conducteurs au début des années deux-mille ont abrogé la flambée des performances des unités de calculs séquentielles. La tendance actuelle est à la multiplication du nombre de cœurs de processeur par socket et à l'utilisation progressive des cartes GPU pour des calculs hautement parallèles. La complexité des architectures récentes rend difficile l'estimation statique des performances d'un programme. Nous décrivons une méthode fiable et précise de prédiction du temps d'exécution de nids de boucles parallèles sur GPU basée sur trois étapes : la génération de code, le profilage offline et la prédiction online. En outre, nous présentons deux techniques pour exploiter l'ensemble des ressources disponibles d'un système pour la performance. La première consiste en l'utilisation conjointe des CPUs et GPUs pour l'exécution d'un code. Afin de préserver les performances il est nécessaire de considérer la répartition de charge, notamment en prédisant les temps d'exécution. Le runtime utilise les résultats du profilage et un ordonnanceur calcule des temps d'exécution et ajuste la charge distribuée aux processeurs. La seconde technique présentée met le CPU et le GPU en compétition : des instances du code cible sont exécutées simultanément sur CPU et GPU. Le vainqueur de la compétition notifie sa complétion à l'autre instance, impliquant son arrêtTechnological limitations faced by the semi-conductor manufacturers in the early 2000's restricted the increase in performance of the sequential computation units. Nowadays, the trend is to increase the number of processor cores per socket and to progressively use the GPU cards for highly parallel computations. Complexity of the recent architectures makes it difficult to statically predict the performance of a program. We describe a reliable and accurate parallel loop nests execution time prediction method on GPUs based on three stages: static code generation, offline profiling, and online prediction. In addition, we present two techniques to fully exploit the computing resources at disposal on a system. The first technique consists in jointly using CPU and GPU for executing a code. In order to achieve higher performance, it is mandatory to consider load balance, in particular by predicting execution time. The runtime uses the profiling results and the scheduler computes the execution times and adjusts the load distributed to the processors. The second technique, puts CPU and GPU in a competition: instances of the considered code are simultaneously executed on CPU and GPU. The winner of the competition notifies its completion to the other instance, implying the termination of the latter
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Dušek, Roman. "Komunitní GPS navigace WAZE a její srovnání s ostatními GPS navigacemi." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-192357.
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This diploma thesis deals with the GPS navigations and their applications for portable phones and other portable devices. The thesis is divided into the theoretical and the practical part. In the theoretical part, the necessary terminology is defined. Further on, the different types of the GPS navigations are examined along with their applications and their particular advantages and disadvantages. A reader of this thesis will learn about the basic principles of how the GPS navigations work. In the practical part, the research part, the particular GPS devices undergo tests that had been based on particular hypotheses and that had been run according to predetermined conditions. The crucial part of this section is a comparison different types of GPS navigations with the GPS navigation Waze which has introduced an innovative approach to the creation of its content by the users themselves.
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Karsson, Oscar. "GNU GPL i komparation - Om GPL-licensen i Sverige och Kalifornien." Thesis, Umeå universitet, Juridiska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-159255.
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Seals, Kelly Charles. "Enhanced Acquisition Techniques for GPS L1C Receivers." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-dissertations/71.
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A new, open-access Global Positioning System (GPS) signal, known as L1C, is the most recent of several modernized Global Positioning System (GPS) signals. The first launch of a GPS satellite with this signal is expected to occur within a few years. One of the interesting features of modern Global Navigation Satellite System (GNSS) signals, including GPS L1C, is the presence of data and pilot components. The pilot component is a carrier with a deterministic overlay code but no data symbols; whereas, the data component carries the navigation data symbols used in the receiver processing. A unique aspect of GPS L1C is the asymmetrical power split between the two components, 75% of the power is used for the pilot and the remaining power, or 25%, for the data. In addition, the pilot and the data components are transmitted in phase with orthogonal spreading codes. Unassisted acquisition of GNSS spread spectrum signals requires a two-dimensional search for the spreading code delay and Doppler frequency. For modern two-component GNSS signals, conventional GNSS acquisition schemes may be used on either component, correlating the received signal with either the pilot or the data spreading code. One obvious disadvantage of this approach is the wasting of power; hence, new techniques for combining, or joint acquisition of the pilot and the data components, have been proposed. In this dissertation, acquisition of GPS L1C is analyzed and receiver techniques are proposed for improving acquisition sensitivity. Optimal detectors for GPS L1C acquisition in additive white Gaussian noise are derived, based on various scenarios for a GPS receiver. Monte Carlo simulations are used to determine the performance of these optimal detectors, based on detection and false alarm probabilities. After investigating the optimal detectors for GPS L1C acquisition, various sub-optimal detectors that are more efficient to implement are thoroughly investigated and compared. Finally, schemes for joint acquisition of L1C and the legacy GPS C/A code signal are proposed and analyzed.
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Streletskiy, Y. S. "Global positioning system." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40496.
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Space exploration has a great meaning for mankind. There are
many space technologies that have been explored for space, but then
transformed for human everyday use. One of such technologies is
GPS navigation.
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Arvid, Johnsson. "Analysis of GPU accelerated OpenCL applications on the Intel HD 4600 GPU." Thesis, Linköpings universitet, Programvara och system, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-140124.
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GPU acceleration is the concept of accelerating the execution speed of an application by running it on the GPU. Researchers and developers have always wanted to achieve greater speed for their applications and GPU acceleration is a very common way of doing so. This has been done a long time for highly graphical applications using powerful dedicated GPUs. However, researchers have become more and more interested in using GPU acceleration on everyday applications. Moreover now a days more or less every computer has some sort of integrated GPU which often is underutilized. The integrated GPUs are not as powerful as dedicated ones but they have other benefits such as a lower power consumption and faster data transfer. Therefore this thesis’ purpose was to examine whether the integrated GPU Intel HD 4600 can be used to accelerate the two applications Image Convolution and sparse matrix vector multiplication (SpMV). This was done by analysing the code from a previous thesis which produced some unexpected results as well as a benchmark from the OpenDwarf’s benchmark suite. The Intel HD 4600 was able to speedup both Image Convolution and SpMV by about two times compared to running them on the Intel i7-4790. However, the SpMV implementation was not well suited for the GPU meaning that the speedup was only observed on ideal input configurations.
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Griffin, Terry W. "GPS CaPPture: a System for GPS Trajectory Collection, Processing, and Destination Prediction." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc115089/.
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In the United States, smartphone ownership surpassed 69.5 million in February 2011 with a large portion of those users (20%) downloading applications (apps) that enhance the usability of a device by adding additional functionality. a large percentage of apps are written specifically to utilize the geographical position of a mobile device. One of the prime factors in developing location prediction models is the use of historical data to train such a model. with larger sets of training data, prediction algorithms become more accurate; however, the use of historical data can quickly become a downfall if the GPS stream is not collected or processed correctly. Inaccurate or incomplete or even improperly interpreted historical data can lead to the inability to develop accurately performing prediction algorithms. As GPS chipsets become the standard in the ever increasing number of mobile devices, the opportunity for the collection of GPS data increases remarkably. the goal of this study is to build a comprehensive system that addresses the following challenges: (1) collection of GPS data streams in a manner such that the data is highly usable and has a reduction in errors; (2) processing and reduction of the collected data in order to prepare it and make it highly usable for the creation of prediction algorithms; (3) creation of prediction/labeling algorithms at such a level that they are viable for commercial use. This study identifies the key research problems toward building the CaPPture (collection, processing, prediction) system.
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Špaček, Jakub. "Aplikace počítače v ultralehkém letadle/vrtulníku pro tarifikaci letů." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2017. http://www.nusl.cz/ntk/nusl-363854.
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This thesis deals with design, development and testing of device for collecting fly data in ultralight airplane or helicopter. The basic collected value is a count of fly hours of each pilot. Additional fly data are latitude, longitude and altitude. Purpose of this device is a fair pricing for use of the airplane. Another utilization is in analysis of flight path or in pilot training. This device is succesfully made from miniature computer Raspberry Pi and uses GPS data. A reader will be informed about aviation regulations, embedded systems, global positioning system and wireless internet connection.
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Lionetti, Fred. "GPU accelerated cardiac electrophysiology." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p1474756.
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Thesis (M.S.)--University of California, San Diego, 2010.Title from first page of PDF file (viewed April 14, 2010). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 85-89).
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Bejeryd, Johan. "GPS-based attitude determination." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11029.
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Inertial sensors and magnetometers are often used for attitude determination of moving platforms. This thesis treats an alternative method; GPS-based attitude determination. By using several GPS-antennas, and with carrier phase measurements determining the relative distance between them, the attitude can be calculated.
Algorithms have been implemented in Matlab and tested on real data. Two commercial GPS-based attitude determination systems have also been tested on a mobile platform and compared to a navigation grade Inertial Navigation System (INS). The results from the tests show that GPS-based attitude determination works well in open areas, but would require support from additional sensors in urban and forest environments.
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Van, Luong Thé. "Métaheuristiques parallèles sur GPU." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2011. http://tel.archives-ouvertes.fr/tel-00638820.
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Les problèmes d'optimisation issus du monde réel sont souvent complexes et NP-difficiles. Leur modélisation est en constante évolution en termes de contraintes et d'objectifs, et leur résolution est coûteuse en temps de calcul. Bien que des algorithmes approchés telles que les métaheuristiques (heuristiques génériques) permettent de réduire la complexité de leur résolution, ces méthodes restent insuffisantes pour traiter des problèmes de grande taille. Au cours des dernières décennies, le calcul parallèle s'est révélé comme un moyen incontournable pour faire face à de grandes instances de problèmes difficiles d'optimisation. La conception et l'implémentation de métaheuristiques parallèles sont ainsi fortement influencées par l'architecture parallèle considérée. De nos jours, le calcul sur GPU s'est récemment révélé efficace pour traiter des problèmes coûteux en temps de calcul. Cette nouvelle technologie émergente est considérée comme extrêmement utile pour accélérer de nombreux algorithmes complexes. Un des enjeux majeurs pour les métaheuristiques est de repenser les modèles existants et les paradigmes de programmation parallèle pour permettre leur déploiement sur les accélérateurs GPU. De manière générale, les problèmes qui se posent sont la répartition des tâches entre le CPU et le GPU, la synchronisation des threads, l'optimisation des transferts de données entre les différentes mémoires, les contraintes de capacité mémoire, etc. La contribution de cette thèse est de faire face à ces problèmes pour la reconception des modèles parallèles des métaheuristiques pour permettre la résolution des problèmes d'optimisation à large échelle sur les architectures GPU. Notre objectif est de repenser les modèles parallèles existants et de permettre leur déploiement sur GPU. Ainsi, nous proposons dans ce document une nouvelle ligne directrice pour la construction de métaheuristiques parallèles efficaces sur GPU. Le défi de cette thèse porte sur la conception de toute la hiérarchie des modèles parallèles sur GPU. Pour cela, des approches très efficaces ont été proposées pour l'optimisation des transferts de données entre le CPU et le GPU, le contrôle de threads, l'association entre les solutions et les threads, ou encore la gestion de la mémoire. Les approches proposées ont été expérimentées de façon exhaustive en utilisant cinq problèmes d'optimisation et quatre configurations GPU. En comparaison avec une exécution sur CPU, les accélérations obtenues vont jusqu'à 80 fois plus vite pour des grands problèmes d'optimisation combinatoire et jusqu'à 2000 fois plus vite pour un problème d'optimisation continue. Les différents travaux liés à cette thèse ont fait l'objet d'une douzaine publications comprenant la revue IEEE Transactions on Computers.
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Jensen, Jørgen Haavind. "Hydrodynamiske beregninger vha GPU." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11549.
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Om man skal gjøre prediksjoner av hydrodynamiske egenskaper til større marine strukturer i dag, er den vanligste måten fremdeles modellforsøk, empiri og lineærteori. Viskøse CFDsimuleringer ved hjelp av RANSmetoder har begynt å gi brukbare resultater, men en direkte Navier-Stokesløser for de Reynoldstall man typisk støter på i større marine applikasjoner, er enda langt framme i tid, både med tanke på beregningskraft og minne. General Purpose GPU har i den siste tiden vist lovende resultater for å øke ytelsen på aritmetisk tunge beregninger. Samtidig har Lattice-Boltzmann-metode for løsing av Navier-Stokes ligninger, i kraft av sin høye parallelliserbarhet, vist seg godt egnet for implementering på GPU. Ved å se på muligheten for å gjøre Lattice-Boltzmann-beregninger over flere GPUer samtidig, håper jeg å ta oss ett steg nærmere en fullskala løser for Navier-Stokes, løse noen nyttige problemer på veien dit, og samtidig få lært meg mer om GPGPUprogrammering som jeg tror vil bli et svært nyttig verktøy for framtidens ingeniør.
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Lien, Geir Josten. "Auto-tunable GPU BLAS." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for datateknikk og informasjonsvitenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18411.
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In this paper, we present our implementation of an Auto tuning system, written in C++, which incorporate the use of OpenCL kernels. We deploy this approach on different GPU architectures, evaluating the performance of the approach. Our main focus is to easily generate tuned code, that would otherwise require a large amount of empirical testing, and then run it on any kind of device. This is achieved through the auto tuning framework, which will create different kernels, compile and run them on the device and output the best performing kernel on the given platform.BLAS is much used in performance critical applications, and is a good candidate for execution on GPUs due to its potential performance increase. Our implementation was benchmarked on various of test environments, with different GPUs, where we achieved comparable results to the ViennaCL library. We also tested against the native vendor specific BLAS libraries from AMD and NVIDIA.
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Thor, Jonas. "On GPS receiver architectures." Licentiate thesis, Luleå tekniska universitet, EISLAB, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16810.
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Navigation can be described as the art of finding the way from one location to another. Clearly navigation is something that we perform in our every day lives and the role of navigation can not be underestimated. There exist many technologies that implement various navigation systems to aid in this process. The most popular navigation system is the Global Positioning System (GPS) owned and operated by the United States of America Government. GPS is a space-based radio navigation system. Initially GPS was primarily intended for military use but the civilian community has found increasing use of GPS. The main reasons why GPS has become such a success is that users anywhere in the world can obtain accurate position, velocity and time measurements free of charge. GPS receivers have significantly come down in price since the inception of the system and today can be considered inexpensive – as little as 1000 SEK or 125 € for a 12 channel hand held unit. The civilian use of GPS is expected increase even further and new applications of GPS will emerge. GPS is targeted for a modernization process where new civilian signals will be added to provide more accurate and reliable measurements. The European Union is planning a new space-based navigation system, Galileo, which when operational will provide the civilian community with an alternative or complement to GPS. It is of great interest to develop flexible GPS receivers that can easily be adapted to new applications and various user scenarios. New receivers must also be developed for the modernized GPS and the upcoming Galileo system. Another area of navigation interest is the integration of GPS and inertial sensor measurements. Inertial sensors can be found in another type of navigation system, namely Inertial Navigation System (INS). Integration of GPS and INS provide a more reliable and accurate navigation system. The evolution of low cost Micro Micro Electro Mechanical Systems (MEMS) inertial sensors has dramatically decreased the cost of INS. Hence applications of integrated GPS/INS systems will find new markets that have not been considered before because of the high cost associated with inertial sensors. In this thesis Programmable Logic Devices (PLDs) are used in combination with GPS software receivers. This has enabled the rapid development of flexible GPS architectures ideal for adaptation to various user scenarios and applications. It is also show that this combination of PLDs and software can provide a prototyping environment for inclusion of new GPS or Galileo signals with great flexibility. Furthermore a platform for the integration of GPS/INS is proposed. The main idea is that data processing should be implemented in a single processor. This alleviates one obstacle commonly found in other GPS/INS integration implementations, which is the limited observability of measurements from both GPS and INS. With the new platform full observability of all measurements is obtained. The proposed platform also provides synchronization of GPS and INS data streams at the lowest possible level. Exact synchronization of measurements is essential to provide an accurate implementation of data fusion algorithms.Godkänd; 2003; 20061022 (ysko)
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Andén, Annika. "Outcomes from GPs' Consultations." Doctoral thesis, Linköpings universitet, Allmänmedicin, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18483.
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Background and aims. Patients’ consultations with GPs can deal with a wide range of conditions and problems. Generally, consultation outcomes have been considered in evaluations but outcome has a meaning for elaboration of care beyond the graduating role of quality and other evaluation instruments. Knowledge about outcomes is needed for understanding and development. The aim of this thesis was to investigate outcomes of GPs’ consultations as directly experienced by patients and GPs and to investigate connections between clinical strategies and presumed patient outcomes. Methods. First, concepts describing outcomes from patients’ and GPs’ viewpoints were developed from interviews in groups and individually. Secondly, based on this, questionnaires about the consultation outcomes were formulated. Then, patients and GPs answered questionnaires regarding the same recent consultation. The numbers of the different outcomes were counted and the experiences of outcomes from the same consultations were compared. Finally, another questionnaire including both the GP outcome questions and questions about the clinical situation and decisions made was answered by GPs. Results. Concepts describing consultation outcomes were brought forward. Cure/symptom relief, reassurance, patient understanding and satisfaction were used by both patients and GPs to describe outcome of consultations. Only patients described as outcomes a confirmation of their ideas and a change in self-perception. GPs, but not patients, described the patient outcomes in terms of check-up and coping. Besides this, GPs also described other outcomes that concerned relationship-building, a change of surgery routines and self-evaluation. Selfevaluation was related to a perceived collegial consensus about right and wrong. The concordance between GPs and patients assessing the same consultations was high for satisfaction, intermediate for patient understanding and low for belief in cure/symptom relief. Clinical strategies were linked to outcomes. Immediate problem solving was registered in about half the consultations. When immediate problem solving was registered the patients were supposed to be more reassured, satisfied and coped better than after gradual problem solving. With increasing psychosocial content of the consultation the GPs registered more dissatisfaction both for themselves and their patients. Conclusions. Change in self- perception was a prominent patient outcome. GPs’ self-evaluations ought to have the inherent possibility to serve as a basis for development of general practice. The entire map of the encountered outcome concepts can serve as a basis for further research and development. The mapping of concepts can be of help when prioritising. Knowledge about the total picture of consultation outcomes can help the GP to understand the patients’ worlds better. It can also contribute to a realistic picture of possible consultation outcomes. The GPs seemed to adjust their problem solving (immediate or gradual) to the registered problem and furthermore adjust the immediate problem solving, focusing either on the problem or on the patient as a person.
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Olsson, Martin Wexö. "GPU based particle system." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3761.
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GPGPU (General purpose computing on graphics processing unit) is quite common in today's modern computer games when doing heavy simulation calculations like game physics or particle systems. GPU programming is not only used in games but also in scientific research when doing heavy calculations on molecular structures and protein folding etc. The reason why you use the GPU for these kinds of tasks is that you can gain an incredible speedup in performance to your application. Previous research shows that particle systems scale very well to the GPU architecture. When simulating very large particle-system on the GPU it can run up to 79 times faster than the CPU. But for some very small particle systems the CPU proved to be faster. This research aims to compare the difference between the GPU and CPU when it comes to simulating many smaller particle-systems and to see what happen to the performance when the particle-systems become smaller and smaller.
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Zunino, Livio J. Alarma (Livio Jorge Alarma). "Levantamento de redes GPS." reponame:Repositório Institucional da UFPR, 1991. http://hdl.handle.net/1884/34743.
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Resumo: Ante o iminente aumento da utilização de receptores GPS surgiu a necessidade de se abordar diversos aspectos presentes num levantamento de redes com GPS. Desta maneira, apresentou-se com detalhes as etapas que fazem parte deste tipo de levantamento. Estratégias para a utilização de 3 e 4 receptores foram apresentadas e aplicadas, a titulo de exemplo, em varias redes. Foram construídos fluxogramas dos algoritmos referentes as estratégias permitindo que sejam facilmente programados.Foi apresentado um levantamento de rede com 4 receptores, juntamente com a analise de seus resultados. Finalmente foi feita uma experiência para testar a factibilidade de se combinar os meto dos estático e pseudo-cinematico, visando obter 6 linhas independentes no levantamento de um quadrilátero com suas diagonais, com um mínimo de tempo gasto em coleta de dados no campo Concluiu-se entao, que e perfeitamente viável tal combinação, sendo gasto no campo menos de 50>C do tempo, se comparado com a utilização do método estático.
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Tokdemir, Serpil. "Digital compression on GPU." unrestricted, 2006. http://etd.gsu.edu/theses/available/etd-12012006-154433/.
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Thesis (M.S.)--Georgia State University, 2006.Title from dissertation title page. Saeid Belkasim, committee chair; Ying Zhu, A.P. Preethy, committee members. Electronic text (90 p. : ill. (some col.)). Description based on contents viewed May 2, 2007. Includes bibliographical references (p. 78-81).