Dissertations / Theses on the topic 'Air traffic control systems'
To see the other types of publications on this topic, follow the link: Air traffic control systems.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Air traffic control systems.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Brown, Glenn, and n/a. "Remote Intelligent Air Traffic Control Systems for Non-Controlled Airports." Griffith University. School of Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040225.084516.
Full textAbstract:
Non-controlled airports are literally that - uncontrolled. Safe separation is achieved by pilot vigilance. The consensus of reports on incidences at noncontrolled airports generally conclude that pilots cannot rely entirely on vision to avoid collision and attempts should be made to obtain all available traffic information to enable a directed traffic search. Ideally, a system is required which has the ability to provide advice to all parties to ensure separation minima is maintained. Provision of a such a system would remove a measure of pressure from the pilot to allow that person to devote their attention to their prime responsibility of flying the aircraft. To this end, research on use of intelligent remote advisory systems for non-controlled airports was undertaken with emphasis on those systems which could minimize human resources and associated recurring costs, to provide a measure of repeatability and to provide an acceptable level of safety. A rule based system was developed and evaluated. The evaluation showed that use of a rule based system as the basis of an intelligent remote air traffic control system for non-controlled airports is a viable proposition. In test scenarios, collision hazards were identified and evasion tactics generated. For a full operational system, the application of the rules and definition of the aircraft circuit area may need refining; however, the results are certainly encouraging.
2
Brown, Glenn. "Remote Intelligent Air Traffic Control Systems for Non-Controlled Airports." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/367276.
Full textAbstract:
Non-controlled airports are literally that - uncontrolled. Safe separation is achieved by pilot vigilance. The consensus of reports on incidences at noncontrolled airports generally conclude that pilots cannot rely entirely on vision to avoid collision and attempts should be made to obtain all available traffic information to enable a directed traffic search. Ideally, a system is required which has the ability to provide advice to all parties to ensure separation minima is maintained. Provision of a such a system would remove a measure of pressure from the pilot to allow that person to devote their attention to their prime responsibility of flying the aircraft To this end, research on use of intelligent remote advisory systems for non-controlled airports was undertaken with emphasis on those systems which could minimize human resources and associated recurring costs, to provide a measure of repeatability and to provide an acceptable level of safety. A rule based system was developed and evaluated. The evaluation showed that use of a rule based system as the basis of an intelligent remote air traffic control system for non-controlled airports is a viable proposition. In test scenarios, collision hazards were identified and evasion tactics generated. For a full operational system, the application of the rules and definition of the aircraft circuit area may need refining; however, the results are certainly encouraging.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Engineering
Faculty of Engineering and Information Technology
Full Text
3
Maldonado, Michelle M. 1977. "Legal aspects of safety management systems and human factors in air traffic control." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115993.
Full textAbstract:
The job of an air traffic controller is stressful by nature. Conditions like aircraft congestion in the skies, an outdated air traffic system and understaffing at control centers can add to the daily stresses of controllers and often cause fatigue. These conditions describe the current status of Air Traffic Services (ATS) in the United States. If left unaddressed, they could compromise safety, the primary objective of air traffic control. The purpose of this thesis is to assess the regulatory framework surrounding ATS specifically in the area of Safety Management Systems (SMS) and Human Factors and determine the course of action to be taken to improve safety in air traffic control.This thesis begins with a description of what air traffic controllers do and the issues that ATS face in the U.S. It then examines the regulatory framework of the International Civil Aviation Organization (ICAO) and the U.S. regarding ATS, specifically SMS and Human Factors. A comparison is made between the privatized air traffic system of Canada and the government owned air traffic system of the U.S. and how privatization makes a difference economically, politically and legally when implementing standards and regulations and enforcing them. Finally, suggestions are made in order to improve the legal framework of air traffic services in the U.S.
4
Gariel, Maxime. "Toward a graceful degradation of air traffic management systems." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34799.
Full textAbstract:
Abstract:
This thesis addresses the problem of graceful degradation for air traffic management systems (ATMS). The graceful degradation is the process by which the safety of the airspace is ensured in the event of failures or operational degradation in the system. After listing the main areas where failures and degradation can affect the ATMS, an ontology of the ATMS is proposed. The ontology allows to introduce failures at different levels, track their propagation throughout the system, and measure their operational impact.
Then, two operational degradations are studied: The first degradation studied is a reduction in the landing capacity at San Francisco International Airport. The aircraft queueing process for terminal area is modeled and optimized to ensure a graceful degradation. The second degradation encompasses Communication, Navigation and Surveillance systems failures. The graceful degradation is ensured by increasing the spacing distance between aircraft, using novel algorithms of avoidance under uncertainties. Those algorithm also serve as probes to compare the degradation capabilities of different traffic configurations such as Miles-In-Trail and Free-Flight arrivals.
Finally, this thesis focuses on monitoring the airspace for potential degradation. The ability and the difficulty of en-route traffic configuration are evaluated using degradation maps. Those maps can be used controller to rapidly and efficiently steer traffic from nominal mode of operations to mode of operations under abnormal conditions. Finally, a monitoring tool for terminal area is presented: the conformance of current flight to pre-identified typical operations is determined in real time. As the number of non-conforming aircraft increases, the complexity seen by air traffic controllers increases, and can become a threat for the airspace safety.
5
Mantilla, Gaviria Iván Antonio. "New Strategies to Improve Multilateration Systems in the Air Traffic Control." Doctoral thesis, Editorial Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/29688.
Full textAbstract:
Develop new strategies to design and operate the multilateration systems, used for air traffic control operations, in a more efficient way. The design strategies are based on the utilization of metaheuristic optimization techniques and they are intended to found the optimal spatial distribution of the system ground stations, taking into account the most relevant system operation parameters. The strategies to operate the systems are based on the development of new positioning methods which allow solving the problems of uncertainty position and poor accuracy that the current systems can present. The new strategies can be applied to design, deploy and operate the multilateration systems for airport surface surveillance as well as takeoff-landing, approach and enroute control. An important advance in the current knowledge of air traffic control is expected from the development of these strategies, because they solve several deficiencies that have been made clear, by the international scientific community, in the last years.Mantilla Gaviria, IA. (2013). New Strategies to Improve Multilateration Systems in the Air Traffic Control [Tesis doctoral]. Editorial Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/29688
Alfresco
6
Lin, Joyce C. (Joyce Chaisin) 1979. "VisualFlight : the air traffic control data analysis system." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87266.
Full text
7
Major, Laura M. (Laura Mary) 1980. "Human-centered systems analysis of mixed equipage in ocean air traffic control." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/30325.
Full textAbstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2005.Includes bibliographical references (p. 107-110).
Technical capabilities for improved communication, surveillance, and navigation (CNS) over the oceans are currently available. However, all aircraft operators will not equip simultaneously because of the high costs required. Consequently, as these CNS systems are integrated into oceanic air transportation architecture, the controller will have to manage the current low frequency surveillance and communication paths in parallel with future enhanced CNS. The cognitive effects of the mixed equipage environment were studied through field studies and experimental analysis. Field studies at New York Center, Oakland Center, and Reykjavik Center in Iceland were conducted to identify human-centered systems issues with the emerging mixed equipage environment. Findings show that the integration of varying communication latencies influences controller planning. The fusion of multiple surveillance sources and the application of varying separation standards based on equipage was found to limit the cognitive processes of the controller. These limitations may constrain the controller from providing full efficiency benefits to aircraft equipped with the highest capabilities, which would reduce the incentives for equipping. Experimental analysis was conducted to further study the integration of high and low frequency surveillance and the use of varying separation standards. Results show that workload increases and situation awareness degrades in the mixed surveillance environment, compared to segregated operations. The results also demonstrate that efficiency benefits attained by equipped aircraft are in fact limited in the mixed equipage environment. Implications for the design of air traffic control systems and procedures are also discussed.
(cont.) Strategies for the segregation of airspace based on equipage are suggested to alleviate controller cognitive limitations and ensure incentives for equipped aircraft. Options are given for the display of equipage information in the future environment.
by Laura M. Major.
S.M.
8
Sage, Meurig. "Declarative support for prototyping interactive systems." Thesis, University of Glasgow, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343910.
Full text
9
Yankosky, Leonard Joseph. "Investigating the role of procedures and cockpit display of traffic information in candidate air traffic management operations." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/21616.
Full text
10
Le, Tru Huy. "Performance and availability analysis of Oceanic Air Traffic Control System (OATCS)." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-01242009-063216/.
Full text
11
Fan, Terence P. "Performance study of flight deck interface systems for air traffic control-pilot data link communications (CPDLC)." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/50075.
Full textAbstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1999.Includes bibliographical references (p. 125-130).
In an effort to reduce saturation in voice radio channels and to take advantage of space-based communication technologies in a cost-effective basis, data link communication between the flight deck and air traffic control (CPDLC) is gradually coming to the fore. Currently, there are three main flight deck interface designs for CPDLC, and a comparative human factors study of these designs is documented in this thesis. However, in spite of the recent development, there is little coherent understanding on the influence of hardware interface components on performance. To contribute to this understanding, the performance of two flight deck CPDLC interface designs were compared at the Boeing Company, and the result was used to estimate the performance of a third interface design. As a follow-on study, an experiment was conducted to examine the relative performance of four simplified interface configurations for CPDLC. The experiment found that there was little difference in performance (task processing time, accuracy and efficiency) among the four interface configurations in simple communication tasks. However, as the level of difficulty of these tasks increases, a dual interface configuration with separate functionality on each interface required the least amount of time to accomplish the stated tasks. The additional maneuverability provided by a dual-interface configuration with identical functionality on each interface did not appear to lead to significant additional performance gains compared with the dual interface configuration with separate functionality. In general, the single-interface configurations required longer processing times for complicated tasks and were also found to incur higher workload according to the NASA Task Load Index.
by Terence Ping Ching Fan.
S.M.
12
Karlsson, Joakim. "The integration of automatic speech recognition into the air traffic control system." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/42184.
Full text
13
Lloyd, Natasha. "Clutter measurement and reduction for enhanced information visualization." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-011206-232808/.
Full text
14
Aguilar, Cortés Carlos Ezequiel. "Air carrier liability and automation issues." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=78196.
Full textAbstract:
Our intended topic is a general discussion of the basic elements of liability related to airline accidents to which fully automated cockpits have constituted an associated contributory factor. In addition we addressed the liability of air carriers arising from injuries or death caused to passengers traveling on international flights. For this purpose, we reviewed the Warsaw System and the different international instruments that constitute it. We also reviewed principles of common law applicable to aircraft manufacturers and the "Free Flight" as an example of the growing automation environment, which is a general benefit to commercial aviation but also a likely contributory cause for accidents in particular cases. In the last part we briefly discuss a personal view regarding the interplay between manufacturers and airlines under the 1999 Montreal Convention, which is an international treaty unifying the desegregated Warsaw System into one single instrument that is expected to enter into force in a few years.
15
Switzer, Earl, Michael Whelan, and Farncisco Lagunas. "AIR TRAFFIC CONTROL COMMUNICATIONS TEST FACILITY AND AVIONICS SYSTEM TEST (ACTFAST): GEARING UP FOR NEXT GENERATION AVIONICS SYSTEMS TESTING." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/608285.
Full textAbstract:
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, CaliforniaGrowth in civil aviation is overwhelming worldwide airspace and air traffic services. The International Civil Aviation Organization (ICAO), Federal Aviation Administration (FAA) and Department of Defense (DoD) are proposing or implementing numerous changes to address this growth. The changes are broadly contained in what the civil aviation community calls Communication, Navigation, and Surveillance/Air Traffic Management (CNS/ATM) and the DoD calls Global Air Traffic Management (GATM). A major component of both civil and DoD proposed changes are data link systems digitally transmitting information between aircraft, air traffic control centers, and aircraft operations centers. The real-time interactive nature of these data-link systems and the integration of the aircraft avionics into a worldwide network are forcing aircraft test agencies to acquire access to this capability. Aircraft flighttesting must address both the specific aircraft avionics test requirements and the system-of-systems aspects of data-link applications. This paper describes the factors driving changes in the worldwide CNS/ATM system and identifies specific proposed or implemented changes. Various flight-test requirements, both civil and military, of the proposed changes are enumerated. Particular attention is paid to the DoDs GATM certification requirements. Finally, we present the Air Traffic Control Communications Test Facility and Avionics System Test (ACTFAST) program and explain its capabilities. Rationale for ACTFAST component parts is included along with a brief outline of how the capabilities represented by each component part are used during flight test to acquire the necessary information to meet civil and DoD aircraft certification requirements.
16
Reynolds, Hayley J. Davison (Hayley Jaye Davison). "Identification of communication and coordination issues in the U.S. air traffic control system." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/81565.
Full text
17
De, Freitas Martinez Andres, and Nurdin Mohamed. "Managing Validation in a Safety Critical System Regarding Automation of Air Traffic Control." Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246073.
Full textAbstract:
The aviation industry is under increasing pressure to reduce cost and manage the increased number of passengers. One area under pressure is the Air Traffic Control. The Air Traffic Control will in a foreseeable future manage the introduction of drones also known as Unmanned Aerial Vehicles by integrating them into civil airspace with manned aircraft. Drones are lacking consensus from authorities with regards to standards due to their rapid expansion. Given their size, shape and speed, they can also pose threats to manned aircrafts and there is a need to address them in an Air Traffic Management system interoperating with manned aircrafts. The purpose in this study is to identify what considerations to make when automating complex system elements with respect to safety. Safety involves all the different stakeholders in the air transportation system, which is a Safety critical System. Furthermore, the aim is also to identify areas in which European Operational Concept Validation Methodology (E-OCVM) can be complemented with. Standard E-OCVM is missing specific assessment criteria with regards to safety and how it can interact with other standards. The approach is thereby to use various standards with focus on Systems Engineering to complement E-OCVM since it is lacking with regards to how it is used to validate Air Traffic Control systems. To capture the complexity of automating elements of an industry involving many stakeholders, a qualitative analysis was conducted in this project, using a System Engineering approach with four standards A-SLP, A-RLP, A-DAS and A-SAS. A-SLP and A-RLP are two general standards while A-DAS and A-SAS are focusing on the contexts of aircrafts and software development. Empirical data was gathered by semi-structured interviews of seven experts within the relevant areas in the field. From the review of the four standards, it was found that they can for instance complement E-OCVM in how software errors can lead to a failure condition among other ways. The main identified considerations faced with an integration of drones into civil airspace, is to manage the human interaction with the introduced Air Traffic Management systems. More specifically, the human element must be involved from the training phase in the development of systems in a Safety Critical System to minimize risk. Furthermore, redundancies that are built into the system has to, not only be able to put the system into a safe state, but also be carefully analyzed in how they interact with other systems to avoid misjudgement for the Air Traffic Controllers. Lastly, to obtain specific details on how interoperability could occur using standards, the standards used in this study refer to usage of other documents and standards. Standards specifically tailored for the operational context of drones would facilitate further testing and implementation of their integration into civil airspace. Given that different standards were used to complement the EOCVM standard, a set of unified standards are required that are proportional with the type of drones, the type of operations and in the environment that they are operating in. This will be needed to fulfill the European vision of safe integration of drones and needs thereby to be carried out in a global manner, thus also share experience with other actors to advance the new technology adaptation.
18
Mercer, Lisa Marie. "Program Evaluation: A Federal Agency's Air Traffic Control Train-the-Trainer Program." ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/1855.
Full textAbstract:
In 2014, the Federal Aviation Administration (FAA) highlighted to the U.S. Senate the need to focus on air traffic control (ATC) training to meet job qualification and attrition rates within the career field. One U.S. Department of Defense military service assists the FAA in providing worldwide ATC services. This service is referred to as the agency throughout this paper to ensure confidentiality. The agency's ATC career field manager echoed the FAA's call for action in his 2014 Strategic/Action Plan. In August 2013, the agency's ATC trainer program was published. As of December 2015, the program had not been evaluated. The purpose of this study was to ascertain if the program facilitated the learning of critical ATC on-the-job training skills. An ad hoc expertise-oriented evaluation was conducted using the lenses of andragogy, experiential learning, and instructional system design (ISD). Purposeful sampling procedures were used to select 20 participants across the subgroups of supervisors, trainers, managers, and training developers from 7 focus sites. The semi-structured interviews queried 4 topical areas derived from Kirkpatrick's 4 levels of evaluation model. Data collected via documents and interviews were analyzed using descriptive, emotion, eclectic, and pattern coding. Key findings indicated that the program was not developed compliant with ISD principles and did not promote adult learning as endorsed by andragogy and experiential learning theory. The implications for positive social change include providing stakeholders with data needed to make evidence-based decisions regarding the current and future state of the program. The evaluation report project can be shared with the FAA, an agency partner, and has the potential to create a platform for improved training practices focusing on optimum and successful adult learning transactions.
19
Fofie, Francis Obeng. "Model prediction of the effects of ameliorating cosmetics on the performance of airport surveillance radar and air traffic control radar beacon systems." Ohio : Ohio University, 2003. http://www.ohiolink.edu/etd/view.cgi?ohiou1175089921.
Full text
20
Weigang, Li. "Knowledge-based system for air traffic flow management : timetable rescheduling and centralized flow control." Instituto Tecnológico de Aeronáutica, 1994. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=1711.
Full textAbstract:
Future air traffic management (ATM) systems have been identified as a matter of great significance for the evolution of future air navigation systems (FANS). As one function of ATM, Air Traffic Flow Management (ATFM) provides a service complementary to Air Traffic Control (ATC). In this research, a Knowledge-Based System (KBS) has been designed to try to solve the ATFM problem. For timetable rescheduling, the system attempts to modify airlines tiemtable to smooth traffic peaks at airports during rush-hours. For centralized flow control, the system works on-line to forecast the place, time and magnitude of the congestion and to take some actions to prevent this congestion. As an Artificial Intelligence language, Prolog was chosen for developing the prototype of the Knowledge-Based ATFM System. The research gives a conceptual description of the application of KBS (specially in Prolog) in the ATFM domain. Using this system, a study of the Brazilian ATFM systemincluding the main airports of the country has been done.
21
Galvin, James J. "Air Traffic Control Resource Management Strategies and the Small Aircraft Transportation System: A System Dynamics Perspective." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/29988.
Full textAbstract:
The National Aeronautics and Space Administration (NASA) is leading a research effort to develop a Small Aircraft Transportation System (SATS) that will expand air transportation capabilities to hundreds of underutilized airports in the United States. Most of the research effort addresses the technological development of the small aircraft as well as the systems to manage airspace usage and surface activities at airports. The Federal Aviation Administration (FAA) will also play a major role in the successful implementation of SATS, however, the administration is reluctant to embrace the unproven concept.
The purpose of the research presented in this dissertation is to determine if the FAA can pursue a resource management strategy that will support the current radar-based Air Traffic Control (ATC) system as well as a Global Positioning Satellite (GPS)-based ATC system required by the SATS. The research centered around the use of the System Dynamics modeling methodology to determine the future behavior of the principle components of the ATC system over time.
The research included a model of the ATC system consisting of people, facilities, equipment, airports, aircraft, the FAA budget, and the Airport and Airways Trust Fund. The model generated system performance behavior used to evaluate three scenarios. The first scenario depicted the base case behavior of the system if the FAA continued its current resource management practices. The second scenario depicted the behavior of the system if the FAA emphasized development of GPS-based ATC systems. The third scenario depicted a combined resource management strategy that supplemented radar systems with GPS systems.
The findings of the research were that the FAA must pursue a resource management strategy that primarily funds a radar-based ATC system and directs lesser funding toward a GPS-based supplemental ATC system. The most significant contribution of this research was the insight and understanding gained of how several resource management strategies and the presence of SATS aircraft may impact the future US Air Traffic Control system.Ph. D.
22
Segersten, Kristoffer, and KEREN ZHAI. "Obstacles for Remote Air Traffic Services: A Multilevel Perspective." Thesis, KTH, Industriell Management, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239690.
Full textAbstract:
Air traffic services (ATS) play an important role for flight safety. Remote air traffic services (RATS) represent a novel, more digitalized, ATS solution. In some aspects, RATS can be argued to outperform conventional ATS. However, as it entails various sociotechnical obstacles, making RATS the dominant solution for ATS is challenging. An inadequate awareness of such sociotechnical obstacles potentially impedes the competitiveness of RATS in general and the RATS providers in particular. This study intends to - from a sociotechnical perspective - identify main obstacles as faced by RATS when aspiring to become the dominant solution for ATS. In order to identify such obstacles, an abductive case study has been conducted. Empirical data was primarily gathered by semi-structured interviews with 10 key stakeholders involved, directly or indirectly, with RATS. The study is delimited to principally gather empirics from Sweden and the United Kingdom. Theoretical concepts of Large Technical Systems (LTS) and the Multilevel Perspective (MLP) are employed to understand and analyze the empirical data. The identified obstacles faced by RATS are mapped into the different levels of the MLP. Obstacles have been identified in all levels of the MLP. The most prominent obstacles seem to lay in social aspects of change processes, a proposition-perception gap, and connectivity infrastructure dependency.Flygtrafiktjänster (ATS) spelar en viktig roll för flygsäkerhet. Fjärrstyrda flygtrafiktjänster (RATS) representerar en ny, i högre grad digitaliserad, lösning för ATS. I vissa avseenden kan RATS anses prestera bättre än konventionellt utförda flygtrafiktjänster. Vägen mot ett tillstånd där RATS är den dominerande lösningen för RATS är dock kantad av olika sociotekniska utmaningar. En otillräcklig medvetenhet om dessa utmaningar kan potentiellt minska konkurrenskraften för RATS i allmänhet och för utvecklare av RATS i synnerhet. Denna studie syftar till att, från ett sociotekniskt perspektiv, identifiera utmaningar som RATS står inför i, en situation där RATS ämnar ta steg mot att bli den dominerande lösningen för ATS. För att identifiera sådana utmaningar har en abduktiv fallstudie utförts. Empirisk data samlades huvudsakligen in genom semi-strukturerade intervjuer med 10 intressenter, direkt eller indirekt involverade, i RATS. Studien är avgränsad till att huvudsakligen samla in empirisk data från Sverige och Storbritannien. Teoretiska ramverk och begrepp beträffande Large Technical Systems (LTS) och Multilevel Perspective (MLP) används för att förstå och analysera empirisk data. De identifierade utmaningarna kopplas till de olika nivåerna i MLP. Utmaningar har identifierats i alla nivåer av MLP, och de mest framstående utmaningarna tycks ligga i sociala aspekter av förändringsprocesser, ett gap mellan proposition och perception, samt ett beroende av uppkopplingsinfrastruktur.
23
Beamon, Courtney A. "Design framework for the graphical user interface of a terminal area air traffic advisory system." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11182008-063554/.
Full text
24
Lloyd, Natasha. "Clutter Measurement and Reduction for Enhanced Information Visualization." Digital WPI, 2006. https://digitalcommons.wpi.edu/etd-theses/67.
Full textAbstract:
The effectiveness of information visualization largely depends on the ease and accuracy with which users can access the information. Visual clutter in a display can detract from a user's ability to properly read the information. An ideal visualization needs to maximize the visibility of patterns and structure and minimize the clutter present. Thus far, there has been surprisingly little work done in finding quantitative ways to measure clutter in information visualizations. The goal of this project was to create clutter measurement and reduction techniques that minimize the presence of visual clutter and maximize a user's ability to accurately read the data. These methods were tested and evaluated on a number of visualizations depicting domestic air traffic data.
25
Yuan, Man. "A SIMD Approach To Large-scale Real-time System Air Traffic Control Using Associative Processor and Consequences For Parallel Computing." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1345058186.
Full text
26
MacDonald, Bruce A. (Bruce Alexander). "A generalized model for the prediction of controller intervention rates in the en route air traffic control system." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/38335.
Full textAbstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1987.MICROFICHE COPY AVAILABLE IN ARCHIVES AND DEWEY.
Bibliography: leaves 247-250.
by Bruce A. MacDonald.
Ph.D.
27
Medeiros, Wesley José Nogueira. "Modelo para determinação de resiliência em sistemas de transportes: uma aplicação no sistema de tráfego aéreo." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3148/tde-17072018-141053/.
Full textAbstract:
Este trabalho propõe um modelo de análise quantitativa baseado em simulação de eventos discretos para a determinação do nível de resiliência em sistemas de transporte. O nível de resiliência é avaliado considerando as funções de desempenho relacionadas a capacidade, ao nível de serviço e ao tempo de recuperação do sistema de transporte frente a um evento de ruptura. O modelo é validado através de estudo de caso aplicado ao sistema de tráfego aéreo brasileiro, considerando um espaço aéreo composto por 12 setores de uma região de informação de voo (FIR), suas demandas diárias de aeronaves, sua malha de rotas aéreas e sua rede de aeródromos instalada. O evento de ruptura é oriundo de condições meteorológicas adversas que afetam simultaneamente as operações de pouso e decolagem no aeroporto do Rio de Janeiro - Santos Dumont (SBRJ) e no aeroporto de São Paulo - Congonhas (SBSP). Conclui-se que o modelo de análise permite a plena determinação do nível de resiliência em sistemas de transportes, mesmo em situações de rupturas operacionais simultâneas.This work proposes a quantitative analysis model based on discrete event simulation (DES) to determine the resilience level of transport systems. The resilience level is evaluated considering the performance functions related to capacity, service level and recovery time of the transport system in a presence of disruptive events. The model is validated through a case study applied to the Brazilian air traffic system, considering an airspace with 12 sectors of a flight information region (FIR), its daily aircraft demands, its air route network and its aerodromes network installed. The disruptive event comes from adverse weather conditions that simultaneously affect the landing and takeoff operations at Rio de Janeiro - Santos Dumont (SBRJ) and São Paulo - Congonhas (SBSP) airports. It is concluded that the analysis model allows the full determination of the resilience level in transport systems, even in situations of simultaneous operational disruptions.
28
Reckhouse, William. "Optimisation of short term conflict alert safety related systems." Thesis, University of Exeter, 2010. http://hdl.handle.net/10036/3154.
Full textAbstract:
Short Term Conflict Alert (STCA) is an automated warning system designed to alert air traffic controllers to possible loss of separation between aircraft. STCA systems are complex, with many parameters that must be adjusted to achieve best performance. Current procedure is to manually ‘tune’ the governing parameters in order to finely balance the trade-off between wanted alerts and nuisance alerts. We present an incremental approach to automatically optimising STCA systems, using a simple evolutionary algorithm. By dividing the parameter space into regional subsets, we investigate methods of reducing the number of evaluations required to generate the Pareto optimal Receiver Operating Characteristic (ROC) curve. Multi-archive techniques are devised and are shown to cut the necessary number of iterations by half. A method of estimating the fitness of recombined regional parameter subsets without actual evaluation on the STCA system is presented, however, convergence is shown to be severely stunted when relatively weak sources of noise are present. We describe a method of aggressively perturbing parameters outside of their known ‘safe’ ranges when complex inhibitory interactions are present that prevent an exhaustive search of permitted values. The scheme prevents the optimiser from repeating ‘mistakes’ and unnecessarily wasting evaluations. Results show that a more complete picture of the Pareto-optimal ROC curve may be obtained without increasing the number of necessary iterations. Efficacy of the new methods is discussed, with suggestions for improving efficiency. Sources of parameter interdependence and noise are explored and where possible mitigating techniques and procedures suggested. Classifier performance on training and test data is investigated and potential solutions for reducing overfitting are evaluated on a toy problem. We comment on potential uses of the ROC in characterising STCA performance, for comparison to other systems and airspaces. Many industrial systems are structured in a similar way to STCA, we hope that techniques presented will be applicable to other highly parametrised, expensive problem domains.
29
Twu, Philip Y. "Control of multi-agent networks: from network design to decentralized coordination." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43713.
Full textAbstract:
This dissertation presents a suite of design tools for multi-agent systems that address three main areas: network design, decentralized controller generation, and the synthesis of decentralized control strategies by combining individual decentralized controllers. First, a new metric for quantifying heterogeneity in multi-agent systems is presented based on combining different notions of entropy, and is shown to overcome the drawbacks associated with existing diversity metrics in various scientific fields. Moreover, a new method of controlling multi-agent networks through the single-leader network paradigm is presented where by directly exploiting the homogeneity of agent capabilities, a network which is not completely controllable can be driven closer to a desired target configuration than by using traditional control techniques. An algorithm is presented for generating decentralized control laws that allow for agents to best satisfy a desired global objective, while taking into account network topological constraints and limitations on how agents can compute their control signals. Then, a scripting tool is developed to aid in specifying sequences of decentralized controllers to be executed consecutively, while helping ensure that the required network topological requirements needed for each controller to execute properly are maintained throughout mode switches. Finally, the underlying concepts behind the developed tools are showcased in three example applications: distributed merging and spacing for heterogeneous aircraft during terminal approaches, collaborative multi-UAV convoy protection in dynamic environments, and an educational tool used to teach a graduate-level networked controls course at the Georgia Institute of Technology.
30
Grether, Dominik [Verfasser], Kai [Akademischer Betreuer] Nagel, and Peter [Akademischer Betreuer] Wagner. "Extension of a multi-agent transport simulation for traffic signal control and air transport systems / Dominik Grether. Gutachter: Peter Wagner ; Kai Nagel. Betreuer: Kai Nagel." Berlin : Technische Universität Berlin, 2014. http://d-nb.info/1066162395/34.
Full text
31
Wigetman, Robert. "Vers la conception du système Sieel : un tuteur intelligent pour le contrôle aérien." Toulouse 3, 1994. http://www.theses.fr/1994TOU30258.
Full textAbstract:
Nous decrivons dans cette these les travaux de conception et de developpement d'un tuteur intelligent pour le controle aerien. Celui-ci comprend trois modules: un simulateur de trafic aerien et son interface homme machine, un systeme expert de controle aerien, et un systeme expert pedagogue. Nos travaux sont centres sur ce dernier module qui a ete concu de facon a etre aussi independant que possible du domaine du controle aerien, et ainsi de pouvoir s'appliquer a d'autres domaines du meme type. Pour ce faire, nous avons caracterise le travail du controleur par des strategies de planification d'actions qu'il doit mettre en uvre pour resoudre des problemes a la fois complexes et dynamiques auxquels il est confronte. A partir de cette caracterisation, nous avons concu une structure, en forme de graphe, pour rendre explicite les relations entre les connaissances utilisees. Ce graphe de connaissances est la fondation sur laquelle est bati notre systeme. Apres une introduction au domaine du controle aerien, nous presentons des generalites sur les tuteurs intelligents et decrivons quelques uns de ces systemes. Puis, nous presentons l'ensemble du systeme sieel de l'ecole nationale de l'aviation civile. Vient par la suite la description de nos travaux dans le detail: tout d'abord, l'analyse de la semantique des communications entre l'eleve et les agents simules a eu pour resultat l'implantation d'une grammaire de cas. Ensuite, la structuration des connaissances enseignees a permis l'elaboration d'un modele d'eleve a couverture partielle. Enfin, notre tuteur utilise ces elements pour comparer les actions de l'eleve avec les plans hypothetiques produits par un systeme expert du domaine afin d'evaluer son niveau d'expertise et de pouvoir determiner des interventions de guidage a mettre en uvre
32
Lopez, Christian W. "UAV Formation Flight Utilizing a Low Cost, Open Source Configuration." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1089.
Full textAbstract:
The control of multiple unmanned aerial vehicles (UAVs) in a swarm or cooperative team scenario has been a topic of great interest for well over a decade, growing steadily with the advancements in UAV technologies. In the academic community, a majority of the studies conducted rely on simulation to test developed control strategies, with only a few institutions known to have nurtured the infrastructure required to propel multiple UAV control studies beyond simulation and into experimental testing. With the Cal Poly UAV FLOC Project, such an infrastructure was created, paving the way for future experimentation with multiple UAV control systems. The control system architecture presented was built on concepts developed in previous work by Cal Poly faculty and graduate students. An outer-loop formation flight controller based on a virtual waypoint implementation of potential function guidance was developed for use on an embedded microcontroller. A commercially-available autopilot system, designed for fully autonomous waypoint navigation utilizing low cost hardware and open source software, was modified to include the formation flight controller and an inter-UAV communication network. A hardware-in-the-loop (HIL) simulation was set up for multiple UAV testing and was utilized to verify the functionality of the modified autopilot system. HIL simulation results demonstrated leader-follower formation convergence to 15 meters as well as formation flight with three UAVs. Several sets of flight tests were conducted, demonstrating a successful leader-follower formation, but with relative distance convergence only reaching a steady state value of approximately 35 +/- 5 meters away from the leader.
33
Lee, Brian Moon. "Adapting navigation and flight conventions to nextgen's en route operations." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41225.
Full textAbstract:
In response to the unparalleled growth of demand for air traffic during the past few decades, the Federal Aviation Administration (FAA) launched the Next Generation Air Transportation (NextGen) program to restructure the National Airspace System (NAS). Among the research is the focus on direct, wind optimal routing using geodesic routes and flight operations that do not depend solely on ground based navigation aids (NAVAID) and a fixed airspace structure. While technologies, such as the Global Positioning System (GPS), exist to locate an aircraft at higher degrees of resolution with a larger coverage, the way in which this information is conveyed is long and cumbersome. Therefore, new ways to describe the airspace is desired.
The thesis presents the results of an experimental investigation into three alternatives to fix/route and GPS methods. The first method is the Navigation Reference System (NRS) using an absolute grid based strategy that has been recently implemented in limited portions of the United States airspace. The second method, the Military Grid Reference System (MGRS), is also a grid based system, and it is used by NATO, but it has not been applied to the air traffic control context. The third alternative is Point Relation Navigation (PRN), which uses a single point of reference within each Air Route Traffic Center (ARTCC) airspace and acts as a hybrid of coordinate and radial fixes.
21 airline dispatchers from a single major U.S air carrier participated in an online assessment of the five methods above through specific tasks. Results indicate that most participants prefer the fix/route system over the others, followed closely by the PRN method. However, there were varying results across all of the methods in terms of speed and accuracy of completing the tasks. This study incites further interest in strategies to describe aircraft routes operating in a more flexible airspace.
34
Watson, Eric. "Sun-Synchronous Orbit Slot Architecture Analysis and Development." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/760.
Full textAbstract:
Space debris growth and an influx in space traffic will create a need for increased space traffic management. Due to orbital population density and likely future growth, the implementation of a slot architecture to Sun-synchronous orbit is considered in order to mitigate conjunctions among active satellites. This paper furthers work done in Sun-synchronous orbit slot architecture design and focuses on two main aspects. First, an in-depth relative motion analysis of satellites with respect to their assigned slots is presented. Then, a method for developing a slot architecture from a specific set of user defined inputs is derived.
35
Al-Ghamdi, Saleh Hashbool. "Human performance in air traffic control system and its impact on safety : an analytical study based on the ATC system in Saudi Arabia." Thesis, City University London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.582619.
Full text
36
Pizzo, Walter Nogueira. "Avaliação da disponibilidade de sistemas computacionais críticos para o controle do espaço aéreo por meio de modelo analítico da teoria de filas." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-02102008-174430/.
Full textAbstract:
O transporte aéreo e a indústria de sistemas de defesa foram setores pioneiros na utilização de sistemas computacionais críticos, incrementando os níveis de automação nas atividades de controle do espaço aéreo. Com o crescimento desses setores, verificado pela expansão dos números de vôos, volumes de cargas e usuários, assim como pela ampliação e diversidade das operações militares, os sistemas de controle têm assumido maior complexidade técnica, introduzindo novos recursos de automação ou facilidades adicionais de apoio para funções exercidas manualmente. Essa situação tem ampliado a dependência dos serviços prestados, relativamente à disponibilidade dos sistemas computacionais. Diretrizes de projeto e procedimentos operacionais são estabelecidos para manter os níveis de segurança nos casos de falha, no entanto a disponibilidade torna-se parâmetro crítico, na medida em que algumas falhas podem afetar a eficiência nominal da prestação dos serviços. Nesse cenário, este trabalho propõe um modelo para avaliação da disponibilidade de sistemas de controle do espaço aéreo, a partir de recursos de análises da teoria de filas. Inicialmente é citado um modelo geral para análise de disponibilidade de data centers. Em seguida, é apresentada uma extensão do modelo geral para análise da disponibilidade em sistemas de controle do espaço aéreo. Para isso, considerou-se a intervenção humana existente nessa atividade, cujas decisões de controle são exercidas por operadores qualificados (controladores), tanto nas atividades inerentes ao serviço de controle, quanto nos casos de degradação, nos quais os operadores ou técnicos de manutenção assumem alguma tarefa de reparo, decorrente da eventual indisponibilidade de funções do sistema.Due to the growth in airspace utilization, which can be verified both in terms of the expansions in aerial movements, airports and volumes of transported passengers and cargo, as well as in terms of the expansion of military operations demands and diversity, airspace control activities have been increasing their technical complexity, introducing new features into the existent automation systems or creating additional resources for the automation of some functions previously performed by human operators. This situation has increased the dependence on the availability of the computer systems involved in the services provided by control centers. Project directives and operational procedures are established in order to maintain the safety integrity levels of the systems, in case any failure occurs. However, the availability becomes a critical parameter, once failure events can force an undesirable state of degraded operation, jeopardizing the nominal capacity of the services being performed through any controlled airspace. In this scenario, this work presents an availability model for the computer systems used in airspace control centers, based on analysis from queuing theory. A general model is first presented, referencing a case study that describes the use of queuing models to access the availability of generic data centers. Further considerations are introduced to extend this general model in order to propose its application for the specific computer systems used in airspace control centers, where operational control relies on human activities. In this case, system operation involves intensive use of human-machine interfaces (HMI), for the regular control services provided, and additional technical or operational maintenance activities, occasionally imposed to repair a momentary loss of any function of the system.
37
Nylin, Magnus. "When Colours Matter : A Case Study of Perceived Usability and Perceived Easiness of Adaptation among Air Traffic Controllers Being Presented to a New Colour Scheme in their ATM System." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-139154.
Full textAbstract:
Colours play an important role in our everyday life. Yet, it is something that we might not pay too much attention to, it is just there, even if we may have our favourite colours and likewise. However, sometimes the colours have a very specific meaning and is a medium of communication. One example of this is air traffic control systems as the one used in Sweden, Denmark, Austria, Ireland, and Croatia. However, despite using the same system, all but Denmark and Sweden use different colour schemes in the human computer interface of the radar screens. A decision was taken within the common organisation, COOPANS, to change this and harmonize the colour scheme, but how will that be received by the users, the air traffic controllers? This thesis aimed at investigating how usable the controllers in the different countries, except Croatia, found the new colour scheme and how easy they thought it would be to adapt to. The question was how this was affected by the fact they are using different colour schemes today? Data was collected with questionnaires during simulations in high fidelity simulator platforms at the air traffic control centres in Malmö, Copenhagen, Vienna, and Shannon. It was found that there were some differences between the sites which could not be explained by the controlled for factors, age, gender, and experience. Among the differences found, one was that the perceived usability differed between controllers in Malmö and Copenhagen respectively. Hence, since they are using the same colours today, the differences seem to be a result of expectations and opinions about the current colour schemes rather than exactly which colour scheme that are currently used. There was also a trend that the opinions from the first impression seemed to be reinforced within the group during the simulation. The major differences however were found to be on individual level.
38
Garcia, Elena. "Development of a framework for the assessment of capacity and throughput with the National Airspace System." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/15784.
Full text
39
Reel, Brian H. "A FLIGHT SIMULATION STUDY OF THE SIMULTANEOUS NON-INTERFERING AIRCRAFT APPROACH." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/80.
Full textAbstract:
Using a new implementation of a NASA flight simulation of the Quiet Short-Haul Research Aircraft, autopilots were designed to be capable of flying both straight in (ILS) approaches, and circling (SNI) approaches. A standard glideslope coupler was sufficient for most conditions, but a standard Proportional-Integral-Derivative (PID) based localizer tracker was not sufficient for maintaining a lateral track on the SNI course. To track the SNI course, a feed-forward system, using GPS steering provided much better results.
NASA and the FAA embrace the concept of a Simultaneous, Non-Interfering (SNI) approach as a way to increase airport throughput while reducing the noise footprints of aircraft on approach. The NASA concept for the SNI approach for Short Takeoff and Landing (STOL) aircraft involves a straight in segment flown above the flight path of a normal approach, followed by a spiraling descent to the runway. As this is a procedure that would be utilized by regional airliners, it is assumed that it would be conducted under Instrument Flight Rules (IFR).
GPS or INS guidance would be required to fly this approach, and it is likely that it would be necessary to fly the approach with a coupled autopilot: a stabilized, curving, instrument approach to decision altitude would be exceedingly difficult to fly. The autopilots in many current commuter and general aviation aircraft, however, were designed before the event of GPS, and do not have provisions for tracking curved paths. This study identifies problem areas in implementing the SNI circling approach on aircraft and avionics as they stand today and also gives examples of what can be done for the SNI approach to be successful.
40
Holtzhausen, Petrus Jacobus. "Identity confidence estimation of manoeuvring aircraft." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/2044.
Full textAbstract:
Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006.A radar system observes an aircraft once during each scan of the airspace, and uses these observations to construct a track representing a possible route of the aircraft. However when aircraft interact closely there is the possiblility of confusing the identities of the tracks. In this thesis multiple hypothesis techniques are applied to extract an identity confidence from a track, given a set of possible tracks and observations. The system utilises numerous estimation filters internally and these are investigated and compared in detail. The Identity Confidence algorithm is tested using a developed radar simulation system, and evaluated sucessfully against a series of benchmark tests.
41
Wang, Huaiyi. "Achieving Efficient Spectrum Usage in Passive and Active Sensing." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483709288836523.
Full text
42
Kubik, Stephen T. "Application of Parent-Child UAV Tasking For Wildfire Detection and Response." DigitalCommons@CalPoly, 2008. https://digitalcommons.calpoly.edu/theses/28.
Full textAbstract:
In recent years, unmanned aerial vehicles (UAVs) have become a dominant force in the aerospace industry. Recent technological developments have moved these aircraft from remote operation roles to more active response missions. Of particular interest is the possibility of applying UAVs toward solving complex problems in long-endurance missions. Under that belief, the feasibility of utilizing UAVs for wildfire detection and response was investigated in a partnership that included NASA’s Aeronautics Research Mission Directorate and Science Mission Directorate, and the United States Forest Service. Under NASA’s Intelligent Mission Management (IMM) project, research was conducted to develop a mission architecture that would enable use of a high altitude UAV to search for reported wildfires with a separate low altitude UAV supporting ground assets.
This research proposes a “straw man” concept incorporating both a High Altitude Long Endurance (HALE) UAV and a Low Altitude Short Endurance (LASE) UAV in a loosely coupled, low cost solution tailored towards wildfire response. This report identifies the communications architecture, algorithms, and required system configuration that meets the outlined goals of the IMM project by mitigating wildfires and addressing the United States Forest Service immediate needs. The end product is a defined parent-child framework capable of meeting all wildfire mission goals. The concept has been implemented in simulation, the results of which are presented in this report.
43
Milluzzi, Anthony J. "An Avian Target Processing Algorithm to Mitigate Bird Strike Risk in Aviation." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1556144831508548.
Full text
44
Rezaie, Reza. "Gaussian Conditionally Markov Sequences: Theory with Application." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2679.
Full textAbstract:
Markov processes have been widely studied and used for modeling problems. A Markov process has two main components (i.e., an evolution law and an initial distribution). Markov processes are not suitable for modeling some problems, for example, the problem of predicting a trajectory with a known destination. Such a problem has three main components: an origin, an evolution law, and a destination. The conditionally Markov (CM) process is a powerful mathematical tool for generalizing the Markov process. One class of CM processes, called $CM_L$, fits the above components of trajectories with a destination. The CM process combines the Markov property and conditioning. The CM process has various classes that are more general and powerful than the Markov process, are useful for modeling various problems, and possess many Markov-like attractive properties.
Reciprocal processes were introduced in connection to a problem in quantum mechanics and have been studied for years. But the existing viewpoint for studying reciprocal processes is not revealing and may lead to complicated results which are not necessarily easy to apply.
We define and study various classes of Gaussian CM sequences, obtain their models and characterizations, study their relationships, demonstrate their applications, and provide general guidelines for applying Gaussian CM sequences. We develop various results about Gaussian CM sequences to provide a foundation and tools for general application of Gaussian CM sequences including trajectory modeling and prediction.
We initiate the CM viewpoint to study reciprocal processes, demonstrate its significance, obtain simple and easy to apply results for Gaussian reciprocal sequences, and recommend studying reciprocal processes from the CM viewpoint. For example, we present a relationship between CM and reciprocal processes that provides a foundation for studying reciprocal processes from the CM viewpoint. Then, we obtain a model for nonsingular Gaussian reciprocal sequences with white dynamic noise, which is easy to apply. Also, this model is extended to the case of singular sequences and its application is demonstrated. A model for singular sequences has not been possible for years based on the existing viewpoint for studying reciprocal processes. This demonstrates the significance of studying reciprocal processes from the CM viewpoint.
45
Leitner, Rodney, and Astrid Oehme. "Design und User Experience in der Flugsicherung – Assistenzsystem zur Fernüberwachung im Multi-Airport-Betrieb." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-223718.
Full textAbstract:
Die Flugsicherung in Europa befindet sich im Wandel, denn der Europäische Luftraum und die damit verbundenen Prozesse werden seit einigen Jahren harmonisiert. Eine Vielzahl der Forschungsprojekte, die diese Entwicklung begleiten, zielt darauf ab, eine orts- und außensichtunabhängige Arbeitsumgebung für Fluglotsen zu entwickeln. Insbesondere für kleinere Regionalflughäfen besteht die Idee, eine Fernüberwachung in einem Control Center zu bündeln, da die Fluglotsen bis auf die üblichen Peak-Zeiten häufig nicht ausgelastet und teilweise unterfordert sind. Dies ermöglicht nicht nur die Fernüberwachung eines Flughafens, sondern auch die gleichzeitige Überwachung und Kontrolle aller Flugbewegungen von mehreren Flughäfen. Neben den bisherigen Aufgaben eines Fluglotsen, wie das Überwachen des Verantwortungsbereichs und die Gewährleistung einer sicheren und zügigen Abwicklung des Flugplatzverkehrs, ist bei einer Mehrfachkontrolle (Multi-Airport-Control) die Planung des Verkehrsflusses auf den zu kontrollierenden Flughäfen von entscheidender Bedeutung. Neben Systemen zum Außensichtersatz ist hierbei daher auch ein System erforderlich, dass dem Fluglotsen bei der Planung der Flugbewegungen aller Flughäfen unterstützt. Unter Berücksichtigung eines nutzerzentrierten Ansatzes, Richtlinien für einfach bedienbare Benutzerschnittstellen und mit der Intention, auch im Arbeitskontext eine hohe User Experience (UX) zu bieten, wurde das Assistenzsystem MasterMAN entwickelt. Das Konstrukt der User Experience verfolgt einen ganzheitlichen Ansatz und beinhaltet nicht nur sachbezogene Aspekte wie die Usability des Systems sondern auch hedonische Aspekte wie Nutzeremotionen.
Folglich wurde eine interaktive grafische Benutzeroberfläche gestaltet, die sowohl einen leichten und sicheren Umgang mit dem System als auch ein anspruchsvolles, positiv empfundenes Look and Feel gewährleistet. Bei der Evaluierung des Systems wurden neben der analytischen Inspektionsmethode Heuristische Evaluation nach Nielsen (1994) auch die ästhetischen Aspekte der grafischen Benutzerschnittstelle mit dem Fragebogen VisAWI (Visual Aesthetics of Websites Inventory) nach Thielsch & Moshagen (2014) adressiert. Acht Usability-Experten bewerteten das Assistenzsystem, notierten alle Auffälligkeiten und Usability-Probleme und führten ein dazugehöriges Severity Rating durch. Unter Zuhilfenahme dieser Vorgehensweise wurden insgesamt 56 Probleme identifiziert, die im weiteren Verlauf der Entwicklung korrigiert wurden. In einer abschließenden Gruppendiskussion mit allen Evaluatoren und den Entwicklern wurden nach dem Vorbild des Pluralistic Walkthrough die Probleme besprochen und Lösungsansätze mit den Usability-Experten erarbeitet. Hinsichtlich der ästhetischen Gestaltung der Benutzerschnittstelle ergab die VisAWIBewertung ein überdurchschnittliches Ergebnis und bestätigte damit ein ansprechendes Design. Weitere Untersuchungen zur Zufriedenheit von Fluglotsen beim Umgang mit dem System sind geplant.
46
Shaker, Alfred M. "COMPARISON OF THE PERFORMANCE OF NVIDIA ACCELERATORS WITH SIMD AND ASSOCIATIVE PROCESSORS ON REAL-TIME APPLICATIONS." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1501084051233453.
Full text
47
Pomikálek, Jiří. "Agentní systém řízení letového provozu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2020. http://www.nusl.cz/ntk/nusl-417249.
Full textAbstract:
Tato práce je zaměřena na agentní návrh v prostředí řízení letového provozu. Hlavním cílem je vytvoření agentních systémů pro pilotní a řídící agenty, které odrážejí typické situace v prostředí řízení letového provozu.
48
Matsuyama, Rafael Tsuji. "Avaliação de risco em operações de pouso de aeronaves em pistas paralelas utilizando procedimentos e técnicas CSPA." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-26082011-142622/.
Full textAbstract:
Historicamente, os sistemas de tráfego aéreo incorporaram níveis de automação nas atividades de controle do espaço aéreo com o intuito de atender à crescente demanda por serviços aéreos e de melhorar os níveis de segurança nos procedimentos de voo. Com o crescimento expressivo previsto para os próximos anos, devido ao aumento nos números de voos e de usuários, as opções tradicionais de expansão da malha aérea e / ou construção de novos aeroportos se tornaram onerosas economicamente, tornando necessária a adoção de alternativas, tais como as técnicas / procedimentos para pousos em pistas paralelas, como forma de aproveitar parte da atual infraestrutura aeroportuária existente, sem a necessidade de enormes aportes financeiros. Para avaliar a viabilidade de projetos de pousos simultâneos em pistas paralelas, um dos fatores importantes a serem analisados é o da avaliação do risco de colisão entre aeronaves associado durante esses procedimentos. Nesse cenário, este trabalho de pesquisa propõe uma extensão no modelo de avaliação de segurança de Ogata para procedimentos de pouso em pistas paralelas, considerando que o modelo original tem o objetivo de medir o nível de risco associado somente para operações de pouso convencionais em pistas paralelas. A extensão deste modelo ocorre no sentido de também permitir a simulação em outros cenários distintos de pouso, o que torna possível tanto a realização de comparativos entre técnicas / procedimentos utilizadas em operações de pouso em pistas paralelas, quanto a avaliação do nível de risco associado. Este modelo estendido de segurança utiliza o método de Monte Carlo, da mesma forma que o original, em que um número elevado de simulações de cenários possíveis de pousos em pistas paralelas é avaliado. Com os resultados obtidos, é analisado o impacto da variação da distância entre as pistas na segurança de pousos em pistas paralelas.Historically, air traffic control systems have incorporated some levels of automation to manage procedures of airspace control in order to meet the growing demand for air transportation services and to improve levels of safety in flight procedures. With significant growth expected in the coming years due to an increase in numbers of flights and passengers, the traditional options of expanding the air traffic network and / or construction of new airports have become economically burdensome, requiring the adoption of alternatives such as techniques / procedures for landings on parallel runways as a way of taking advantage of part of the current airport infrastructure, without requiring enormous financial contributions. To assess the feasibility of projects of landing in parallel runways, one of the important factors to be analyzed is the evaluation of the risk of collision between aircraft, associated to these procedures. In this scenario, this research proposes to extend the Ogata safety assessment model in procedures for landing on parallel runways, whereas the original model aims to measure the level of risk associated only with conventional landing operations in parallel runways. The extension of this model occurs in order to allow the simulation of different landing scenarios, which makes possible both the conduct of comparative techniques / procedures used in landing operations on parallel runways, such as the risk level assessment. This model uses the Monte Carlo simulation, the same as the original model, in which a large number of simulations of possible scenarios for landings on parallel runways are evaluated. With these results, it studies the impact of the change of distance between lanes on the safety of aircraft landing on parallel runways.
49
Sampaio, José João Martins. "A tomada de decisão operacional em sistemas complexos de trabalho e a emergência de novas competências profissionais. O caso dos serviços de controlo de tráfego aéreo." Doctoral thesis, Instituto Superior de Economia e Gestão, 2006. http://hdl.handle.net/10400.5/4549.
Full textAbstract:
Doutoramento em Sociologia Económica e das OrganizaçõesA adaptabilidade das organizações ao ambiente agressivo e turbulento que caracteriza a sociedade de informação, promove o desenvolvimento de sistemas de produção complexos de natureza flexível e adaptativa. Esta flexibilização/complexificação requer o desenvolvimento de valências pessoais e profissionais que ultrapassam o quadro restrito do posto de trabalho autónomo, discreto e especializado, enquanto conjunto de qualidades que devem ser submetidas à prova da resolução de problemas concretos, em situações de trabalho que implicam incerteza e complexidade técnica (Gallart 1997). Surge assim um novo conceito de competência profissional que não emerge da aprovação de um currículo escolar formal, mas sim do exercício da aplicação do conhecimento necessário à tomada de decisão e resolução de problemas complexos e que não é mecanicamente transmissível {idem). É neste entendimento que propomos, em sistemas complexos de trabalho com forte incorporação tecnológica, o desenvolvimento de um modelo sistémico e integrativo das competências profissionais - gerais e transversais - quer ao nível da organização do trabalho quer ao nível da tecnologia incorporada. A operacionalização do modelo passa pela introdução do novo conceito de factor tecnológico que, numa perspectiva complementar do tradicional conceito de factor humano possibilite, para além da adaptação tecnológica à dimensão humana, o conhecimento e compreensão da "natureza" da tecnologia presente, numa perspectiva de valorização do elemento Humano e numa dinâmica de equilíbrio entre as dimensões humana e tecnológica. A validação empírica do modelo é suportada pelo estudo dos serviços de controlo de tráfego aéreo, desenvolvido na NAV Portugal - EPE, entre 2003 e 2005, através da observação da realidade operacional, aplicação de entrevistas abertas, inquérito por questionário, estudos de caso e simulação da realidade operacional.
The adaptability of the organizations to the aggressive and turbulent environment that characterizes the information society, promotes the development of complex production systems with a flexible and adaptive nature. This flexibility/complexity requires the development of personal and professional valences that extend beyond the restricted frame of an autonomous, discrete and specialized workplace, as a set of skills that must be submitted to the resolution of concrete problems, in work situations that imply uncertainty and technical complexity. A new concept of professional competence appears thus, which does not emerge from the approval of a formal academic curricula, but as the application of the necessary knowledge to the decision process and to the resolution of complex problems and that is not mechanically transmissible. It is in this context that we propose, in complex work systems with strong technological incorporation, the development of a systemic and integrative model of professional (general and cross) competencies, either at the level of human subsystem or at the technical one. We purpose a complex model of operational decision process analysis, in a complex working environment. The operation of the model requires the introduction of the new concept of technological factors which, in a complementary perspective of the traditional concept of human factors will allow, beyond the technological adaptation to the human dimension, the knowledge and understanding of the "nature" of the technology, in a perspective of valuation of the Human element and in a dynamics of balance between the human and technological dimensions. The empirical validation of the model is grounded by the study of the Air Traffic Control Services, developed in the NAV Portugal - EPE, between 2003 and 2005, through the observation of the operational reality as well as the application of interviews, questionnaire inquiry, case studies and the simulation of the operational reality.
50
Mitrovic, Predrag Stanimir. "Global Positioning System based runway instrumentation system." Ohio : Ohio University, 2001. http://www.ohiolink.edu/etd/view.cgi?ohiou1173987759.
Full text