Tesis sobre el tema "Radar – Innovation"
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Papadaki, Akrivi-Angeliki. "Service innovation implementation in international hotel groups : a critical realist study". Thesis, Oxford Brookes University, 2016. https://radar.brookes.ac.uk/radar/items/8da8dab0-5079-4d7f-a004-1bdd0aed7a29/1/.
Texto completoNunes, Benilton Medeiros. "A influ?ncia do modelo de triplice h?lice no grau de maturidade de inova??o: um estudo de caso em empresas participantes do projeto PR?-INOVA/NAGI no estado do RIO GRANDE DO NORTE". Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15089.
Texto completoPublic investments in the development of innovation in the country, either through the rigging of public universities, either through public announcements of the promotion, increased dramatically in recent years. To analyze the efficiency and effectiveness of the use of public resources is especially in times of austerity, essential for the development of a country. In this context, this research aims to identify the influence of public investments to promote innovation in the degree of maturity of innovative companies in the state of the RN. Another goal is to identify the regional influence from the installation site - capital or countryside, in the performance of the companies studied in the degree of innovation. The theoretical basis of the understanding of the scope of the concept of innovation and its determination for the purposes of this study. Typology, degree of innovation, evaluation methodologies and mechanisms to support innovation : Still on the theme of innovation additional concepts that help the reader to a greater understanding, such as are presented. Following is approached conceptualization of the triple helix, highlighting the concepts advocated by Etzkowitz and Leydesdorff, Salomon and Silva and Ipiranga, Freitas and Paiva, among others. With regard to methodological aspects, we propose a descriptive, exploratory and explanatory research quantitative and qualitative approach with the target audience group of companies served by INOVA PRO- NAGI design - multi-institutional action from a public resource called FINEP promotes the development of innovative companies in the State of Rio Grande do Norte - in 2013. The research should provide reflection and understanding of the influence of public investment in innovation, which by means of qualitative predictive variables associated with quantitative method to explain which variables are significant variations in the degree of maturity of enterprises studied
Os investimentos p?blicos no desenvolvimento da inova??o no pa?s, quer por meio do aparelhamento das universidades publicas, quer por meio de editais de fomento, cresceram vertiginosamente nos ?ltimos anos. Analisar a efici?ncia e efic?cia da aplica??o dos recursos p?blicos ?, sobretudo em tempos de austeridade, primordial para o desenvolvimento de um pa?s. Neste contexto, a presente pesquisa tem como objetivo identificar a influ?ncia dos investimentos p?blicos de fomento ? inova??o no grau de maturidade de inova??o de empresas instaladas no Estado do RN. Objetiva-se ainda identificar a influ?ncia regional, a partir do local de instala??o capital ou interior, no desempenho das empresas estudadas no grau de inova??o. A fundamenta??o te?rica parte da compreens?o da dimens?o do conceito sobre a inova??o e a sua defini??o para efeitos deste trabalho. Ainda sobre a tem?tica da inova??o s?o apresentadas conceitua??es adicionais que auxiliam o leitor a uma maior compreens?o, tais como: tipologia, graus de inova??o, metodologias de avalia??o e mecanismos de apoio ? inova??o. Na sequ?ncia ? abordada a conceitua??o sobre a tr?plice h?lice, ressaltando os conceitos preconizados por Etzkowitz e Leydesdorff, Salomon e Silva e Ipiranga, Freitas e Paiva, entre outros. No tocante aos aspectos metodol?gicos, prop?e-se uma pesquisa descritiva, explorat?ria e explicativa de abordagem quanti-qualitativa, tendo como p?blico-alvo o grupo de empresas atendidas pelo projeto PR?-INOVA NAGI a??o multiinstitucional que a partir de recursos de uma chamada p?blica da FINEP promove o desenvolvimento da inova??o em empresas do Estado do Rio Grande do Norte no ano de 2013. A pesquisa dever? proporcionar reflex?es e compreens?o da influ?ncia dos investimentos p?blicos em inova??o, que por meio de vari?veis qualitativas preditivas, associada ao m?todo quantitativo explicar quais vari?veis s?o significativas na varia??o do grau de maturidade em inova??o das empresas estudadas
Skitioui, Salah. "Développement de radars millimétriques innovants". Electronic Thesis or Diss., Limoges, 2024. http://www.theses.fr/2024LIMO0017.
Texto completoThis research is part of a CIFRE thesis aimed at developing technologies to simplify and reduce costs associated with a body scanners dedicated to security applications, while improving the refresh rate of reconstructed images. The fundamental objective is to devise an affordable real-time imaging system. Research efforts are focused on leveraging analog multiplexing techniques based on frequency diversity, integrated into an FMCW architecture, to overcome temporal limitations inherent in existing approaches. To this end, a prototype of a leaky reverberation cavity has been conceptualized, subjected to laboratory testing, and subsequently integrated into an industrial measurement bench. This accomplishment represents a significant advancement in the evolution of a real-time imaging system utilizing an analog multiplexing device
Silveira, Thiago Fontes da. "Economia da inovação : estudo de caso sobre as micro e pequenas empresas de calçados dos Vales do Sinos e do Paranhana". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/70003.
Texto completoThis scientific research discusses about the innovation economics, having as background the company’s modern economy, exploring empirical aspects of Europe and a case study about the innovation in micro and small footwear enterprises of Vale do Sinos and Vale do Paranhana. The basis of this study is grounded on the theory of innovation from the perspective of the theory of the firm. In order to reach the objectives, a bibliographical research was conducted, seeking to identify the current stage of European companies in comparison to Brazilian companies. On the other hand, the field work sought to identify how the process of innovation takes place in micro and small enterprises footwear of Vale do Sinos and Vale do Paranhana. As an analysis tool, the innovation radar was used, aiming at identifying similarities and differences between the European reality and the reality of micro and small enterprises. The basis of this field work arose from de opportunity to use the research developed by FAPERGS together with SEBRAE, in which the author acted as a researcher. The evidences show that, in order to excel in innovation, it would be necessary to have a balance between all indicators and that this would be one of the weaknesses of the leaders in innovation cluster formed by Vale do Sinos and Vale do Paranhana.
De, Luca Alessandro. "Forward scatter radar : innovative configurations and studies". Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8669/.
Texto completoRocca, Paolo. "Innovative Combinatorial Strategies for the Synthesis of Radar Tracking Antenna Systems". Doctoral thesis, Università degli studi di Trento, 2008. https://hdl.handle.net/11572/367812.
Texto completoRocca, Paolo. "Innovative Combinatorial Strategies for the Synthesis of Radar Tracking Antenna Systems". Doctoral thesis, University of Trento, 2008. http://eprints-phd.biblio.unitn.it/81/1/Ph.D.Thesis.ROCCA-November.2008.pdf.
Texto completoLyle, Beverley Nicola. "Peripheral backwater or innovative upland? : patterns of Franciscan patronage in Renaissance Perugia, c.1390-1527". Thesis, Oxford Brookes University, 2008. https://radar.brookes.ac.uk/radar/items/e2e5200e-c292-437d-a5d9-86d8ca901ae7/1.
Texto completoESPIN, LOPEZ PEDRO FIDEL. "An investigation into the use of innovative ground-based microwave radar architectures for estimating snow properties". Doctoral thesis, Università degli studi di Pavia, 2020. http://hdl.handle.net/11571/1325949.
Texto completoSnow is a very important environmental variable and a primary water resource in many areas of the world. Monitoring seasonal snowpack properties is crucial for properly managing snow-related hazards such as snow avalanches and snowmelt-floods. Microwave radars have been proposed as a means to non-destructively monitor snowpacks, but they have invariably employed external aids or a-priori assumptions to calculate key physical parameters of snow, such as total snow depth, snow density, snow water equivalent, and so on. This main contribution of this thesis is the proposal, design, implementation and experimental validation of an innovative radar architecture intended for snowpack monitoring, based on the use of two receivers. The proposed device can deliver estimates of total depth and wave speed in the snowpack, for both dry and wet snow conditions, without being supplemented by any additional hypothesis or device. The radar can also provides a rough estimation of the internal stratigraphy of the snowpack in terms of layer thickness, layer density and (in a preliminary form) layer wetness. The device was verified in the field with either dry or wet snowpacks in experimental sites. Another contribution of this thesis is the proposal of a novel radar technique for self-standing calculation of the Snow Water Equivalent that can be applied to bi-static radars. This technique, based on the multipath propagation of the radar signal into the snowpack, only requires a radar with two fixed antennas without any other device, movement of the antennas, or a-priori empirical assumptions. Finally, in order to improve the performance of the radar architectures proposed, a novel antenna realized by three-dimensional printing methods has been developed and experimentally tested. The antenna is based on a double-ridge waveguide configuration and is realized with different infill percentage dielectric material. The dielectric material presents low losses and a relatively high dielectric constant, reducing the encumbrance of the radar system.
FALABELLA, FRANCESCO. "Spaceborne and Terrestrial Synthetic Aperture Radar (SAR) Systems: Innovative Multi-temporal SAR Interferometric Methods and Applications". Doctoral thesis, Università degli studi della Basilicata, 2023. https://hdl.handle.net/11563/162987.
Texto completoMulti-temporal SAR interferometric (Mt-InSAR) techniques are nowadays mature tools to measure the temporal evolution of the Earth’s surface with millimetric accuracy. The reliability of crustal measurements is closely related to the goodness of the used Mt-InSAR algorithms in isolating the deformation-related signal from the overall signal, and this becomes increasingly complex as the noise levels of each interferogram increase. Canonical techniques are highly reliable in monitoring the displacement evolution of targets that are found to be largely stable or coherent over the entire period of analysis. Otherwise, when the scatterers are particularly affected by decorrelation problems, the obtained deformation estimates turn out to be corrupted and unreliable. Thus, there is a strong demand for new advanced Mt-InSAR processors that can provide accurate estimates of crustal deformation even in scenarios with more or less severe decorrelation problems. This thesis work focuses on the study of multi-temporal InSAR techniques applicable in both satellite and terrestrial case. Specifically, the canonical Mt-InSAR multigrid techniques for analyzing targets at the finest resolution grid will be discussed extensively highlighting their criticality in medium to low coherence areas, and in this context an innovative technique is proposed to better operate in decorrelated environments. The new method relies on efficient phase-unwrapping (PhU) operations performed at the native spatial scales. In particular, a set of multi-look (ML) interferograms is first unwrapped using conventional (or advanced) PhU algorithms at the regional scale. Subsequently, ML unwrapped interferograms are used to facilitate the PhU operations performed at the local scale (single-look). Specifically, the unwrapped multi-look interferograms are resampled to the single-look grid and modulo-2π subtracted to the single-look interferograms. These phase residuals are then unwrapped and added back to the multi-look resampled interferograms. To accomplish these operations, at variance with alternative multiscale methods, no (linear/nonlinear) models are used to fit the spatial high-pass phase residuals. Finally, the unwrapped single-look interferograms are properly inverted to retrieve the ground displacement time series using any small baseline (SB)-oriented multitemporal InSAR tool. Experimental results are performed by processing a set of SAR data acquired by the X-band COSMO-SkyMed sensor over the coastal area of Shanghai, China. Then, the focusing moves on the Weighted Least-squares (WLS) techniques applied within the InSAR framework for improving the performance of the phase unwrapping operations as well as for better conveying the inversion of sequences of unwrapped interferograms to generate ground displacement maps. In both cases, the identification of low-coherent areas, where the standard deviation of the phase is high, is requested. Therefore, a WLS method that extends the usability of the Mt-InSAR Small BAseline Subset (SBAS) algorithm in regions with medium-to-low coherence is presented. In particular, the proposed method relies on the adaptive selection and exploitation, pixel-by-pixel, of the medium-to-high coherent interferograms, only, so as to discard the noisy phase measurements. The selected interferometric phase values are then inverted by solving a WLS optimization problem. Noteworthy, the adopted, pixel-dependent selection of the “good” interferograms to be inverted may lead the available SAR data to be grouped into several disjointed subsets, which are then connected, exploiting the Weighted Singular Value Decomposition (WSVD) method. However, in some critical noisy regions, it may also happen that discarding of the incoherent interferograms may lead to rejecting some SAR acquisitions from the generated ground displacement time-series, at the cost of the reduced temporal sampling of the data measurements. Thus, variable-length ground displacement time-series are generated. The presented experiments have been carried out by applying the developed technique to a SAR dataset acquired by the COSMO-SkyMed (CSK) sensors over the Basilicata region, Southern Italy. In the continuation of the thesis work, the properties characterizing the phase non-closure of multi-look SAR interferograms are explored. Precisely, we study the implications of multi-look phase time incongruences on the generation of ground displacement time-series through SB Mt-InSAR methods. Our research clarifies how these phase inconsistencies can propagate through a time-redundant network of SB interferograms and contribute, along with PhU errors, to the quality of the generated ground displacement products. Moreover, we analyze the effects of short-lived phase bias signals that could happen in sequences of short baseline interferograms and propose a strategy for their mitigation. The developed methods have been tested using both simulated and real SAR data. The latter were collected by the Sentinel-1A/B (C-band) sensors over the study areas of Nevada state, U.S., and Sicily Island, Italy. After the development of algorithms for the satellite part, the work veers to ground-based SAR (GB-SAR) sensors. In this field, we propose a method for estimating and compensating the atmospheric phase screen (APS) in sets of SAR interferograms generated with a GB-SAR instrument. We address the presented approach’s physical, statistical, and mathematical framework by discussing its potential and limitations. In contrast with other existing algorithms that estimate the APS from the unwrapped phase signals, our methodology is based on the straightforward analysis of the wrapped phases, directly. Therefore, the method is not affected by any potential phase unwrapping mistake, and it is suitable for Mt-InSAR applications. The effects of the local topography, the decorrelation noise, and the ground deformation on the APS estimates are deeply studied. Experiments performed on simulated and real GB-SAR InSAR data corroborate the validity of the theory. In particular, the simulated results show that the method is beneficial in zones with medium-to-high topographic slopes (e.g., for Alpine and mountainous regions). Further, an interferometric SAR application for the study of three-dimensional (3-D) deformation through the joint and integrated use of satellite and ground SAR data is presented. More precisely, the interferometric data-combining technique exploits the innovative Mt-InSAR algorithms mentioned above, and allows obtaining 3-D mean displacement velocity maps at the finest spatial grid among the available data. In conclusion, also some interested satellite SAR applications in prevention and analysis of particular natural and human-induced disasters are given.
Anselmi, Nicola. "Innovative Tiling Methodologies for the Synthesis of Phased Array Antennas for Advanced Radar and Communications Systems". Doctoral thesis, Università degli studi di Trento, 2018. https://hdl.handle.net/11572/368597.
Texto completoAnselmi, Nicola. "Innovative Tiling Methodologies for the Synthesis of Phased Array Antennas for Advanced Radar and Communications Systems". Doctoral thesis, University of Trento, 2018. http://eprints-phd.biblio.unitn.it/2899/1/Ph.D.Thesis.ANSELMI-April.2018.FINAL.pdf.
Texto completoPIRACCI, EMILIO GIUSEPPE. "Tecniche innovative per la rivelazione e la separazione di segnali sovrapposti nel canale del radar secondario di sorveglianza". Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1356.
Texto completoThis work addresses the reception problem of 1090 MHz signals in high traffic density environment. The 1090 MHz signals are used in air traffic control systems: The secondary surveillance radar (SSR), the ADS-B (Automatic Dependent Surveillance-Broadcast), the multilateration systems (MLAT and WAM ), the TIS-B (Traffic Information System - Broadcast) system and the T-CAS (Traffic Collisions Avoidance System). The signals sources are: the avionic transponder, the vehicular transponder and the TIS-B ground stations. The transponders transmit conventional and Mode S signals after receiving an interrogation by the secondary radar surveillance systems, by active MLAT / WAM and by T-CAS systems. Mode S transponders also transmit squitters, i.e. spontaneously emitted signals. The TIS-B ground-stations transmit Mode S signals in order to update the non-ADS-B traffic to the aircraft equipped with ADS-B (it is an ADS-B gap filler). A 1090 MHz receiver placed in a high traffic environment has a significant probability of receiving signals overlapping in time, particularly while using omnidirectional receiving antenna. Inevitably, this situation prevents the proper reception and decoding of all signals, compromising the integrity of surveillance. The thesis propose several methods to address the problem of overlapping received signal exploiting the antenna diversity, via an antenna array, for signals detection, separation, and decoding. These methods necessitate the use of an antenna array and a multichannel receiver, but also a mono-channel algorithm is proposed, which is useful for older systems that have only a single omnidirectional antenna. The presented algorithms have been assessed using real recorded signals. Finally the 1090 MHz channel capacity enhancement using the proposed methods is demonstrated.
Li, Gang [Verfasser]. "Innovative Imaging Synthetic Aperture Secondary Radar Concepts for Ultra-Precise Positioning and Tracking of a Backscatter Transponder in Multipath Environments / Gang Li". München : Verlag Dr. Hut, 2015. http://d-nb.info/1069019887/34.
Texto completoMASTRO, PIETRO. "Innovative Techniques for the Retrieval of Earth’s Surface and Atmosphere Geophysical Parameters: Spaceborne Infrared/Microwave Combined Analyses". Doctoral thesis, Università degli studi della Basilicata, 2023. https://hdl.handle.net/11563/162986.
Texto completoInanlou, Farzad Michael-David. "Innovative transceiver approaches for low-power near-field and far-field applications". Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52245.
Texto completoFelizardo, Márcio André Ferreira. "The value creation radar applied to the space engineering sector: the case of deimos engenharia". Master's thesis, 2016. http://hdl.handle.net/10362/17217.
Texto completoBernardi, Gabriella. "INNOVATIVE FRACTAL-BASED MODELS FOR RADAR ALTIMETER DATA". Tesi di dottorato, 2011. http://www.fedoa.unina.it/9029/1/Bernardi_PhD_Thesis.pdf.
Texto completoCecchini, Andrea. "High-accuracy digital elevation model generation and ship monitoring from synthetic aperture radar images: innovative techniques and experimental results". Tesi di dottorato, 2013. http://www.fedoa.unina.it/9091/1/cecchini_andrea_25.pdf.
Texto completoBoccia, Valentina. "Bathymetric digital elevation model generation from L-band and X-band synthetic aperture radar images in the Gulf of Naples, Italy: innovative techniques and experimental results". Tesi di dottorato, 2015. http://www.fedoa.unina.it/10082/1/Boccia_Valentina_27_TESI.pdf.
Texto completoCamassa, Domenico. "Approcci innovativi all’identificazione dinamica delle strutture e del danno strutturale per le costruzioni in muratura". Doctoral thesis, 2021. http://hdl.handle.net/11589/226618.
Texto completoThis work concerns the study and development of innovative approaches to dynamic structural identification and dynamic damage identification for masonry constructions. The architectural heritage, mainly composed of masonry constructions, represents a fundamental part of the cultural heritage of countries; therefore, its preservation is an essential goal for our society and for the scientific community. Anyway, one of the most critical issue is the lack of knowledge on the structural behavior of these constructions. Dynamic testing and dynamic-based structural damage identification techniques could play a major role for overcoming this obstacle. Indeed, the combined use of these techniques makes it possible to get information about the global and the local structural features, essential for calibrating structural models and designing specific and effective conservation interventions. However, these techniques still show some drawbacks which hinder their application to masonry constructions: the traditional experimental setup for dynamic testing of structures is complex and highly demanding; moreover, most dynamic-based damage identification methods are too general and do not take into account the peculiar characteristics of masonry constructions. This thesis proposes original solutions to both problems, through the combination of original theoretical approaches and advanced experimental techniques, applied in an innovative way. As to dynamic testing, the potentials and limitations of the radar interferometry – a highly innovative technique for remotely measuring structural vibrations – were explored. In particular, because of the inability to reconstruct the three-dimensional and spatial characteristics of mode shapes of structures by using a single radar interferometer, theoretical models and expeditious experimental approaches involving the simultaneous use of two radar interferometers were developed. As to dynamic-based structural damage identification techniques, due to the fundamental role played by arches in masonry constructions, an ad hoc natural frequency-based approach for the localization and quantification of multiple damages in masonry arches was proposed. This approach has been developed considering the main structural features of blocky masonry arches and the most relevant damage phenomena possible for this type of structures. All of the proposed approaches have been validated through laboratory and in situ experimental tests.
Strunk, Jacob L. "Estimation and modeling of selected forest metrics with lidar and Landsat". Thesis, 2012. http://hdl.handle.net/1957/30084.
Texto completoGraduation date: 2013
Access restricted to the OSU Community at author's request from June 21, 2012 - Dec. 21, 2012