Dissertations / Theses: 'Radar'

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Geladakis, Dimitrios N. "Comparison of the step frequency radar with the conventional constant frequency radars." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA328272.

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Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, December 1996.
"December 1996." Thesis advisor(s): Gurnam S. Gill. Includes bibliographical references (p. 45). Also available online.

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Karlsen, Jan Sigurd. "Radar målfølging." Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10444.

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Kongsberg Defense & Aerospace (KDA) benytter radarer av typen phased array i deres luftvernsystemer. På bakgrunn av nødvendige egenskaper som elektronisk styring av radarstråle tas denne radartypen også i bruk i denne oppgaven. En tilgjengelig signalkilde fra radaren er SNR data som brukes for utbedring av målfølgingen. På bakgrunn av valgt radar er det fremlagt beskrivelser for hvordan oppstart og avslutning av målfølging kan gjennomføres. Metoder for generering av observasjonsdata og observasjonsstøy er tilpasset SNR data innhentet fra radaren. Observasjonsdata er generert ved monopulsbasert og vinkelbasert metode i form av Amplitude Comparison Monopulse (ACM) og Sequential Lobing (SL). Observasjonsstøy er generert ved Bartons, NOAHs og vinkelstøybasert metode, der sistnevnte er utledet fra SL algoritmen. Samtlige metoder er beskrevet matematisk og funksjonelt. To forskjellige typer algoritmer basert på Kalman-filter (KF) er brukt for estimering. Disse benytter forskjellige metoder for å følge manøvrerende mål. Utvidet KF, Extended Kalman-filter (EKF), er satt i sammen med en manøverdeteksjonsalgoritme og Samvirkende multiple modeller, Interacting Multiple Modell (IMM), filter benytter sannsynlighetsberegninger for å skille mellom en hastighetsmodell og en akselerasjonsmodell. Sammensetninger av målfølgealgoritmer basert på modeller for observasjonsdata, observasjonsstøy og estimering er implementert i Matlab 2007a og simulert i manøvrerende miljø med ulik grad av akselerasjon og manøvrerbarhet. Det er vist at det mulig å generere tilstrekkelig nøyaktige observasjonsdata ved å benytte SNR data fra radar med vinkelbasert metode. Monopulsbasert metode gir større avvik i form av bias og er dermed uegnet for bruk med filtrene som brukes for estimering. Observasjonsstøy lar seg tilnærme med tilstrekklig nøyaktighet ved NOAHs og vinkelstøybasert metode. Bartons metode avhenger for lite av differansen i SNR dataene og genererer dermed for unøyaktige støydata for estimatorene. På bakgrunn av resultater fra ulike projeksjoner og statistiske beregninger er det vist at EKF og IMM filteret fungerer godt som estimatorer. IMM filteret gir noe bedre resultater ved manøvre grunnet bedre manøverhåndteringsmetoder. Allikevel fremgår det av konsistenstesten at IMM filteret er optimistisk ved harde manøvre, noe som kan skyldes en dårlig tilpasset akselerasjonsmodell. Både EKF og IMM filteret ble realisert med variabel målestøy i form av generert observasjonsstøy, og dette viste seg å gi vesentlig større nøyaktighet i estimatene. Det er altså vist at en fullstendig målfølgealgoritme lar seg realisere med tilgjengelige SNR data fra radarer av typen phased array, og at nøyaktigheten kan forbedres ved å innføre variabel målestøy basert på de samme SNR dataene.

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Gouveia, Carolina Teixeira de Sousa. "Bio-Radar." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23811.

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Mestrado em Engenharia Eletrónica e Telecomunicações
Nesta dissertação é desenvolvido um protótipo de um bio-radar, cujo foco é a aquisição e processamento do sinal respiratório em tempo real. O sistema do bio-radar permite medir sinais vitais com precisão, baseando-se no princípio do efeito Doppler, que relaciona as propriedades do sinal recebido com a variação da distância percorrida desses sinais. Essa distância está compreendida entre as antenas do radar e a caixa torácica do paciente. No contexto deste projeto, é apresentado o modelo matemático do bio-radar e é também desenvolvido um algoritmo que visa extrair o sinal respiratório tendo em consideração a sensibilidade dos sinais envolvidos tal como o modo de operação do sistema. O protótipo em tempo real desenvolvido nesta dissertação usa um front-end baseado em Software Defined Radio (SDR) e os sinais por ele adquiridos são processados no software LabVIEW da National Instruments.
In this dissertation, a prototype of a bio-radar was developed with focus in the real-time acquisition and processing of the respiratory signal. The bio-radar system can measure vital signals accurately by using the Doppler e ect principle that relates the received signal properties with the distance change between the radar antennas and the person's chest-wall. In this framework, a mathematical model of the bio-radar is presented. Also, an algorithm for respiratory rate extraction is proposed having in mind the acquired signal's sensitivity and the system's operation. The real-time acquisition system is developed using a front-end based in SDR and the acquired signals are processed using the LabVIEW software from National Instruments.

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Yong, Siow Yin. "Radar polarimetry." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FYong.pdf.

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Fabry, Frédéric. "Precipitation estimates by radar : a zenith pointing radar perspective." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59887.

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Data collected from zenith pointing radar is used to study the range dependence of some meteorological radar errors associated with different sampling methods between radar and gauges in stratiform precipitation. Errors due to the vertical variation of reflectivity such as those related with the bright band or with snow growth cause a much larger bias in radar estimates than those due to beam filling or gradients. The maximum useful range varies with the bright band height and the elevation angle program used, a CAPPI giving superior results especially for snow. The sudden changes in bright band height over short distances and the large scatter of its thickness limit the accuracy of current corrections for the vertical variation of reflectivity based on scanning radar data. The possibility of using a zenith pointing radar to obtain this correction is discussed.

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Löhner, Andreas. "Ein Beitrag zum Verbessern der azimutalen Auflösung vorwärtsschauender Radarsysteme mit synthetischer Apertur /." Düsseldorf : VDI-Verl, 1999. http://www.gbv.de/dms/bs/toc/300868324.pdf.

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Lane, Andrew. "Real-time weather radar correlation using a vertically pointing radar." Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244841.

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Frankford, Mark Thomas. "EXPLORATION OF MIMO RADAR TECHNIQUES WITH A SOFTWARE-DEFINED RADAR." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306526246.

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Ahmed, Atheeq. "Human Detection Using Ultra Wideband Radar and Continuous Wave Radar." Thesis, Linköpings universitet, Kommunikationssystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-137996.

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A radar works by radiating electromagnetic energy and detecting the reflected signal returned from the target. The nature of the reflected signal provides information about the target’s distance or speed. In this thesis, we will be using a UWB radar and a CW radar to help detect the presence and rough location of trapped survivors by detecting their motions. Range is estimated in the UWB radar using clutter removal with SVD and for the dual frequency CW Radar using STFT and median filtering. The effect of the algorithm parameters on their performance was analyzed. The performance of the implemented algorithms with regards to small motion detection, distance estimation and penetration capability was analyzed. Both systems are certainly capable of human detection and tracking.

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Ravichandran, Kulasegaram. "Radar imaging using two-dimensional synthetic aperture radar (SAR) techniques /." abstract and full text PDF (UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446797.

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Thesis (M.S.)--University of Nevada, Reno, 2007.
Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2008]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.

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Reeves, Bryan Anthony. "Slope stability radar /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17049.pdf.

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Forslöw, Tobias. "Visualizing Radar Signatures." Thesis, Linköping University, Department of Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7770.

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It is important for the military to know as much as possible about how easily detected their vehicles are. One way among many used to detect vehicles is the use of radar sensors. The radar reflecting characteristics of military vehicles are therefor often rigorously tested. With measurements and simulations it is possible to calculate likely detection distances to a vehicle from different angles. This process often produces very large data sets that are hard to analyze.

This thesis discusses and implements a method for visualizing the detection distance data set and also discusses a lot of related issues with a focus on computer graphics.

The main concept is called spherical displacement and the idea is to visualize the detection distances as a surface with the imagined vehicle in the center point. Detection is likely inside the surface but not on the outside. This concept is the next step from the colored sphere where the colors represent the detection distance which was previously used.

The thesis project resulted in a visualization tool that uses the new concept and can handle large data sets. The spherical displacement concept is more intuitive and shows detail better than the colored sphere visualization.

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Southcott, Michael L. "Radar track association /." Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phs726.pdf.

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McGregor, J. A. "HF radar oceanography." Thesis, University of Canterbury. Physics, 1985. http://hdl.handle.net/10092/7578.

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The development of a 26MHz pulsed Doppler radar system for remote sensing of ocean surface conditions is described. This radar obtains Doppler spectra of echoes from ocean waves within the range 10-40 km from the shore. From these Doppler spectra it is possible to estimate oceanographic parameters such as sea state, wind speed, wind direction, radial components of current velocities and properties of swell. The work concentrates on the radar design principles and includes a detailed study of the effect of ground wave propagation conditions on the performance of radar systems of this type. Results obtained with the radar are discussed from the points of view of both the performance of the system and the oceanographic information contained in the Doppler spectra.

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Brown, William O. J. "MF radar interferometry." Thesis, University of Canterbury. Physics and Astronomy, 1992. http://hdl.handle.net/10092/8142.

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This thesis describes the development, operation and observations of interferometry experiments on two medium frequency spaced antennae radar operated by the Department of Physics and Astronomy of the University of Canterbury; the 2.4 MHz radar at Birdlings Flat near Christchurch, New Zealand, and the 2.9 MHz radar at Scott Base on Ross Island in the Antarctic. These radars are of a standard design and detect scattering from the D and lower E regions of the ionosphere in the mesosphere and lower thermosphere. The interferometry techniques used were those of temporal, spatial and frequency domain interferometry which provide information on Doppler shifting and the directional and radial distribution of backscattered signals received by the radars. This project represents the first time that these techniques have been operated together on radars of the type used in this project. The techniques were also carried out in conjunction with the standard procedures used on these radars, that of Spaced Antennae Drifts with Full Correlation Analysis (FCA). Various forms of interferometric analyses were carried out and comparisons were made between the results of interferometric analyses and those of more conventional techniques. For example a study was made of the relationship between interferometric and FCA velocities in which it was found that there was good agreement between the two methods, particularly when the scattering region does not change rapidly as it moves. Other analysis techniques investigated included examination of the angular distribution of scattering and aspect sensitivity, the statistical distributions of scattered signals, post beam steering, vertical velocities and momentum fluxes. Frequency domain interferometry provided enhanced measurement of range and the scattering depth or distribution of range of scattered signals. Measurements of scattering depth clearly identified examples of thin layers or localized scatter. These localized scattering events appeared to be associated with either steady flow or long period variations in steady flow, for example with the semidiurnal solar tide. Aside from these events much of the scatter was observed to be anisotropic and also appeared to originate from a number of distributed scattering centres spread horizontally and vertically in a manner consistent with Fresnel scattering models.

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OLIVEIRA, CARMEN LUCIA DE CARVALHO. "RADAR SIMULATION SYSTEM." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1992. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8781@1.

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Este trabalho especifica um Sistema de Simulação Radar desenvolvido na linguagem de programação C, tendo como aplicação a área militar. Visa a análise, simulação, monitoração e avaliação de sinais na interação de Sistemas Radar e Sistemas de Contra Medidas Eletrônicas (CME). A flexibilidade e a modularidade do Sistema de Simulação Radar proposto objetivam a descrição realista do comportamento de diversos radares modernos. A escolha correta da forma de onda e a definição do modelo de radar mais adequado a uma determinada aplicação são considerados fatores essenciais para a utilização eficaz do Sistema de Simulação proposto. Como abordagem preliminar à implementação do Sistema de Simulação, o presente trabalho apresenta um estudo das formas de onda de radar e de alguns radares modernos de maior interesse.
A Radar Simulation System hás been developed on the C programming Language. Its application is addressed to the military fiels and deals with the analysys, simulation, monitoring, and evaluation of signals in the interaction of Radar and eletronic Counter Measure Systems (ECM). The flexibilitu and modularity of the proposed Radar Simulation System is aimed at the realistic description of the behavior of many modern radars. The choice of the radar waveform and the definition of the appropriated radar model to a specific application are considered essential factors to an effective utilization of the proposed Radar Simulation System. Radar waveforms and modern radars considered of great interest have been presented as an introductory approach to the implementation of the Radar Simulation System.

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Wang, L. "Avalanche imaging radar." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1344105/.

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Over the past century, due to the significant increase in recreational activities, transportation, construction in high altitude areas, mountain areas all around the world, have been seen substantial development. In these high altitude areas around mountain ranges, avalanche always brings huge threaten to human’s activities and lives. The rising demand for higher safety measures has given new pressure to the development of mitigation technology to protect human in certain areas, and driven rise to a new scientific area entirely devoted to avalanche. A RADAR system can provide superior penetration capability through any type of weather condition, and can be used in the day or night time. A RADAR system uses electromagnetic wave that does not require a medium like Sonar that is using water as medium. Radar also can be long range, because the electromagnetic wave is able to propagate at the speed of light. It is less susceptible to weather conditions compared with Lasers. It does not require target cooperation to emit any signals. The original contribution of this thesis contains four parts: the novel work of snow particles models (option models and HFT model); the simulation of a receiver module in an avalanche radar system; the development of an active baseband filter; and the development of an FPGA chirp generator. The option model and HFT model are built to give solutions and to map and predict the moving route of snow particles. The purposes of proposing these two models are different and the assumptions of both totally diverge. The option model is built on the assumption of knowing all the information about the stop location and start location of an airborne avalanche. The key concept of the option model is the introduction of a binary tree. By using the theories of a binary tree, normal distribution and the knowledge of the stop location and start location of an airborne avalanche, its route can be mapped and the behaviour can be further studied. On the other hand, an HFT model is based on the theories of stochastic process. It does not require any knowledge of the avalanches and can be used to predict the movement of an airborne avalanche. The FPGA chirp generator is built for more flexibility than the DDS waveform generator. The simulation is done in this thesis to help design the receiver module in avalanche radar. And the prototype of the FPGA chirp generator is based on Xilinx virtex-5 development board and avanet high-speed DAC. This new design is different from existing FPGA chirp generator, since it uses the onboard memory to store the chirp signal data, which gives the ability to store more data to significantly increase the sampling rate and resolution of chirp signal.

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Svensson, Johan, and Ludvig Schough. "Ställdon till radar." Thesis, Högskolan i Halmstad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-31156.

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Företaget Swedish Adrenaline håller just nu på att utveckla en innovativ radar. Denna radar kan ses som en kamera med väldigt liten vinkel och lång brännvid. Målet med detta projekt är att ta fram ett elektromekaniskt ställdon till radarn som tillåter den att roteras och vinklas i en hemisfär runt sin egen axel. Ytterligare ska ställdonet inte ge upphov till oljud som kan upplevas störande av personer i omgivningen.
The company \textbf{Swedish Adrenaline} are currently developing a innovative radar. This radar can be seen as a camera with a very narrow angle and long focal length. The goal of this project is to produce an electromechanical actuator for the radar which allows it to rotate and tilt in a hemisphere around it's axis. Also the actuator shouldn't cause noise that can be perceived as irksome for people nearby.

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Agnarsson, Joakim. "Simulation of a radar in Flames : a ray based radar model." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-201093.

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In this report a radar model is modeled and implemented in a simulation framework called Flames. The focus is to investigate how and if electromagnetic waves emitted from the radar antenna can be simulated by different methods and how these methods can be implemented to work in real-time simulations. The radar model developed in this report is based on ray tracing and ray propagation techniques developed by the author. The model considers varying refractive indices that describes both standard atmospheres and atmospheres where ducting occur. Preparatory studies are also made to model ground reflection by ray tracing techniques. Other simulation techniques, such as the Finite-Difference Time-Domain method and the Split-Step Parabolic Equation method, are furthermore considered for radar simulation applications. The results show that ray tracing in conjunction with geometrical optics is a valid method for simulating electromagnetic waves in simple atmosphere models.

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Panzner, Berthold [Verfasser]. "Synthetic Aperture Radar Focusing Techniques for Subsurface Radar Imaging / Berthold Panzner." München : Verlag Dr. Hut, 2013. http://d-nb.info/1031844910/34.

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Ford, Lee. "Adaptive radar signature control with the use of radar absorbing materials." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398391.

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Van, der Merwe P. J. (Paulus Jacobus). "A close range baseband radar transceiver for application in borehole radar systems." Thesis, Stellenbosch : University of Stellenbosch, 2007. http://hdl.handle.net/10019.1/328.

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Thesis (PhD (Electrical and Electronic Engineering)--University of Stellenbosch, 2007.
ENGLISH ABSTRACT: A monostatic baseband radar is required with the capability of detecting close range targets that appear at distances comparable to the system’s resolution, without compromising the radar’s maximum range. The application in borehole radar imposes further constraints associated with the physical limitations and variable electromagnetic environment of different borehole diameters and conditions. This dissertation discusses the complete design process of the analog section of a monostatic radar that successfully addresses these issues. The proposed transceiver employs a series duplexing arrangement consisting of an antenna, transmitter, receiver and an isolation switch. An exponentially decaying tail is observed in the current flowing on a borehole radar antenna when excited by pulse waveforms. The characteristics of this tail depend strongly on the borehole environment. A measurement technique is developed that accurately quantifies this exponential decay by digitizing a logarithmic representation of the antenna current while it is operating in various boreholes. Transmitters are then designed to drive these antennas with waveforms that prevent the formation of current tails. This is achieved through the use of pole-zero networks or alternatively by generating certain asymmetric, bipolar waveforms. The transmitters are simultaneously designed to have an output impedance approximating a short circuit after the transient is generated. In the series configuration proposed here, the duplexing of the antenna between transmitter and receiver is then reduced to simply isolating the receiver during transmit-mode. The switch responsible for this isolation disconnects the receiver and presents a short circuit between antenna and transmitter during transmit-mode, while connecting the receiver terminals between the antenna and the short circuited transmitter terminals in receive-mode. The required close-in performance of the transceiver dictates that the transition between these two states of the isolation switch occur in a time similar to the duration of the transmitter waveform. The switching artefacts generated by the switch are consequently similar to the radar data signal. The isolation switch employs an innovative configuration (using both transistors and diodes) which accepts a single control signal and causes the switching artefacts to be generated as a common mode signal, while a differential path is created for the radar data signal which is being switched. This leads to effective suppression of the switching signal in the signal passed to the receiver. Dissipative filtering is advocated as a fundamental design principle for high fidelity receivers and it is shown how it can be applied by using constant impedance equalizers and diplexers as basic building blocks. This principle is used as the basis for the design of this transceiver's receivers, which incorporate both standard gain blocks and operational amplifiers. A complete borehole radar system, based on the transceiver developed here, was built and tested; resulting in the first known practical monostatic borehole radar system. Data obtained in field trials are presented and suggest that the monostatic system compares well with current state of the art bi-static systems.
AFRIKAANSE OPSOMMING: Die behoefte is geïdentifiseer vir 'n monostatiese basisbandradar wat oor die vermoë beskik om nabygeleë teikens op 'n afstand soortgelyk aan die resolusie van die stelsel waar te neem, sonder om die maksimum bereik van die stelsel in te kort. Die toepassing daarvan in 'n boorgatradarstelsel lei tot verdere vereistes vanweë die fisiese beperkings en veranderende elektromagnetiese omgewing van boorgate met verskillende deursnitte en toestande. Hierdie proefskrif is gemoeid met die volledige ontwerpsprosedure van die analoog gedeelte van 'n monostatiese radar wat al hierdie kwessies aanspreek. 'n Serie verbinding van antenne, sender, ontvanger en isolasieskakelaar word ingespan vir hierdie ontwerp. Eksponensieel wegsterwende stertjies word waargeneem in die antennestroom van 'n boorgatradarantenne wanneer dit aangedryf word deur puls golfvorms. 'n Meettegniek word ontwikkel wat hierdie eksponensiële verslapping noukeurig kan monitor deur 'n logaritmiese voorstelling van die antennastroom te versyfer terwyl dit ontplooi word in verskillende boorgate. Senders word dan ontwikkel om hierdie antennes aan te dryf met golfvorms wat juis die vorming van hierdie stertjies voorkom. Dit word bewerkstellig deur die gebruik van pool-zero netwerke of andersins deur die opwek van sekere asimmetriese, bipolêre golfvorms. Die senders se uittree-impedansies moet egter terselfdertyd ontwerp word om 'n kortsluiting te benader sodra die oorgang klaar opgewek is. Met die serie verbinding wat hier gebruik word, raak die vereiste tyddeling van die antenna tussen die sender en ontvanger dan bloot 'n geval van ontvanger-isolasie gedurende uitsaai-modus. Die skakelaar wat verantwoordelik is vir hierdie isolasie ontkoppel die ontvanger en vertoon soos 'n kortsluiting tussen sender en antenne tydens uitsaai-modus, maar verbind weer die terminale van die ontvanger tussen die antenne en kortgeslote senderterminale tydens ontvang-modus. Die vereiste kortafstand vermoë van die stelsel veroorsaak dat die tysduur van die oorgang tussen hierdie twee modusse soortgelyk is aan dié van die sender golfvorm en enige skakelverskynsels wat opgewek word deur die skakelaar is gevolglik soortgelyk aan die radardatasein self. Die isolasieskakelaar gebruik egter 'n innoverende konfigurasie (met transistors sowel as diodes) wat funksioneer met 'n enkele beheersein en die skakelverskynsels as gemene modus seine opwek, terwyl 'n differensiële seinpad geskep word vir die radardatasein wat geskakel word. Die skakelseine word gevolglik effektief onderdruk in die sein wat oorgedra word aan die ontvanger. Die gebruik van verkwistende filters word voorgestel as 'n fundamentele ontwerpsbeginsel vir hoëtrou ontvangers en daar word getoon hoe dit toegepas kan word met konstante impedansie vereffeningsbane en dipleksers. Hierdie beginsel is dan ook gebruik as basis vir die ontwerp van hierdie stelsel se ontvangers, wat gebruik maak van beide standard aanwinsblokke sowel as operasionel versterkers. 'n Volledige boorgatradarstelsel, gebaseer op die stelsel wat hier ontwikkel is, is gebou en getoets. Die gevolg is die eerste bekende, praktiese monostatiese boorgatradarstelsel. Data wat hiermee verwerf is word aangebied en dui daarop dat die monostatiese stelsel baie goed opweeg teen huidige bi-statiese stelsels.

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Rossler, Carl W. Jr. "Adaptive Radar with Application to Joint Communication and Synthetic Aperture Radar (CoSAR)." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366144863.

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Nagarajan, Nishatha. "Target Tracking Via Marine Radar." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1345125374.

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Ong, Peng Ghee Teng Haw Kiad. "Digital LPI radar detector /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA389889.

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Icoz, Dilsad. "Milimeterwave Fmcw Radar Design." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12611385/index.pdf.

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In traffic radar system, Frequency Modulated Continuous Wave (FMCW) will be used since these radars are preferred in short distance and high range resolution systems. The system to be constructed is not only a system operating with Doppler principle and detection of speed
on the contrary a functional radar is planned to be produced. In various traffic radars in use, Doppler shift constituted by the targets causing high reflection within detection field is measured and the measured speed corresponding to this shift is seen to exceed the limits. In case of cars more than one, their speeds cannot be measured separately. In this FMCW Radar system, it is possible to identify the targets&rsquo
distance and speed. The speed information of the target will be specified by Doppler frequency and also as a result of position monitoring, the speed will be determined out of the position change occurring in the unit time. These features, in multi lane road, will be used both for different lanes and also for the cars moving at the same lane but in different ranges. The radar system designed in this study is an easy to use, low power consuming device which can be mounted into the car. Only the active part of the system is off the shelf products and the other RF cards are designed and produced. As a result, a low cost traffic radar will be produced

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Yates, Gillian. "Bistatic synthetic aperture radar." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1446870/.

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Synthetic aperture radar (SAR) allows all-weather, day and night, surface surveillance and has the ability to detect, classify and geolocate objects at long stand-off ranges. Bistatic SAR, where the transmitter and the receiver are on separate platforms, is seen as a potential means of countering the vulnerability of conventional monostatic SAR to electronic countermeasures, particularly directional jamming, and avoiding physical attack of the imaging platform. As the receiving platform can be totally passive, it does not advertise its position by RF emissions. The transmitter is not susceptible to jamming and can, for example, operate at long stand-off ranges to reduce its vulnerability to physical attack. This thesis examines some of the complications involved in producing high-resolution bistatic SAR imagery. The effect of bistatic operation on resolution is examined from a theoretical viewpoint and analytical expressions for resolution are developed. These expressions are verified by simulation work using a simple 'point by point' processor. This work is extended to look at using modern practical processing engines for bistatic geometries. Adaptations of the polar format algorithm and range migration algorithm are considered. The principal achievement of this work is a fully airborne demonstration of bistatic SAR. The route taken in reaching this is given, along with some results. The bistatic SAR imagery is analysed and compared to the monostatic imagery collected at the same time. Demonstrating high-resolution bistatic SAR imagery using two airborne platforms represents what I believe to be a European first and is likely to be the first time that this has been achieved outside the US (the UK has very little insight into US work on this topic). Bistatic target characteristics are examined through the use of simulations. This also compares bistatic imagery with monostatic and gives further insight into the utility of bistatic SAR.

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Linder, Martin, and Tobias Nylin. "Pricing of radar data." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-104020.

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In this thesis we examine the issue regarding pricing of radar data and surveillance to the operators of air navigation service (ANS) at the aerodromes in Sweden. The question of who should be responsible for providing radar data to the operators is being managed that results in if it should be LFV, as it is today, the government or another authority. This is being examined since LFV in 2010 lost its monopoly position in the terminal area in Sweden. LFV still has monopoly on the en route part, and thru the en route income finances the radar data to all operators in Sweden. Air traffic service units (ATS) receive the radar data without any compensation to LFV, this needs to be regulated and conditions and prerequisites are necessary to be implemented. Our supervisor at LFV, Anders Andersson, has been the primary source of information regarding the current situation, background for the problem and also provided relevant documents with proper information. Laws and regulations have been accessed via the Swedish Transport Agency’s website and scientific articles on monopolies and pricing in aviation and other markets have been used in order to compare earlier issues similar to ours. The literature studies combined with interviews with Anders Andersson are the foundations of the development of the pricing schemes. The result of the thesis is presented as three different pricing schemes where each one of them are presented in tables and analysed how it will affect the ATS. In the first pricing scheme the cost for maintenance is equally divided between all ATS, this means every ATS has to pay the same cost regardless size of the airport, number of movement and net sales. The second pricing scheme is based on number of landings per year and divides the ATS in three categories. This scheme increases the cost with concern to the number of landings, which results in the larger ATS are charged more than the smaller ATS. The final pricing scheme is divided in four categories and based on terminal control area (TMA) and requirements on surveillance service. This means the different categories are based on a combination of the median distance flown in TMA and the different requirements the ATS must provide surveillance service. This pricing scheme is a disadvantage for the military airports and the ATS with associated TMA. The conclusions that can be made are the Swedish Transport Agency needs to implement some distinct guidelines and regulations regarding how the pricing should be made, where the pricing schemes and analysis in this thesis could form the basis for future investigations.

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Wilcox, D. C. "MIMO radar direction finding." Thesis, Queen's University Belfast, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546432.

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Taylor, Andrew D. "A meteor orbit radar." Thesis, University of Canterbury. Physics, 1991. http://hdl.handle.net/10092/8111.

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A Meteor Orbit Radar, AMOR, has been built near Christchurch, New Zealand. It uses a narrow beam pulsed radar to detect meteors down to a + 12.5 radio-meteor magnitude limit. AMOR measures the relative timelags between the onset of meteor echoes at each of three spaced receiver stations to calculate the meteoroid velocity with an accuracy of ±2.5 km.s-¹ . A 'Luggable' MAC AT is used to run the radar, identify meteor echoes and record raw observation records. A total of 1.3 X 10⁵ meteor velocities have been determined using the new timelag method. For 1.6 X 10⁴ of these observations velocity measurements could be made using Fresnel diffraction patterns and these were in complete agreement with those from the new timelag velocity technique. The diffraction patterns recorded by AMOR allow atmospheric decelerations to be determined by calculating the velocity for overlapping subsections of the patterns. Typically, the atmospheric decelerations found lay between 0 and 40 km.s-². Observed meteor velocities need to be corrected for the presence of the Earth before a heliocentric meteoroid orbit can be calculated. AMOR uses a new vector scheme to make corrections for atmospheric deceleration, the rotation and gravitational acceleration of the Earth, conversion to a heliocentric frame using rotation matrices and a correction for the orbital velocity of the Earth. This new derivation greatly simplifies the theoretical framework for computer based calculation of meteor orbits. The 1990 apparition of the ŋ; Aquarid meteor shower was used as a calibration test for the complete AMOR system. 270 shower meteors were detected giving a mean stream orbit with elements of q = 0.57AU, e = 0.98, i = 165.5°, w = 97°, Ω = 46°. This agrees closely with previous orbits given for the r; Aquarid stream and demonstrates the very large improvement in meteor stream characteristics that can be achieved by AMOR. Orbital elements for individual ŋ; Aquarid meteors can be determined within the following measurement limits: 0.33 < q < 0.76 AU, 0.76 < e < 1.45, 163.0° < i < 167.5°, 62° < w < 126°, 35 < Ω < 49°. Computerised data acquisition, automated reduction to orbital elements and interactive graphical displays were developed and are a significant feature of the system. AMOR is capable of continuous unattended operation producing observation records and reduced orbital elements on site.

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Aytun, Alper. "Frequency diverse array radar." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5113.

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Approved for public release; distribution is unlimited
Electronic scanning is the most desirable feature of state-of-the-art radar systems. With electronic scanning, it is possible to steer the main beam of an array antenna instantaneously into a desired direction where no mechanical mechanism is involved in the scanning process. Electronic scanning methods including phase scanning, time delay scanning, and frequency scanning have been used in various radar applications; however new and cheaper scanning methods are still being investigated. It is the purpose of this thesis to investigate an array configuration called frequency diverse array (FDA), which gives rise to range-, time-, and angle-dependent scanning without using phase shifters. In this thesis, first, frequency diverse array as a time-modulated array is presented. A general analysis and the theory of time domain scanning is given. Equations derived for a time-modulated frequency diverse array are simulated using MATLAB. Amplitude tapering and Fourier series expansion is implemented in MATLAB and the results are provided for comparison. Secondly, analysis of a frequency diverse array is presented. Time-, range-, and angle-dependent electronic scanning is achieved by applying a small amount of frequency shift among the antenna elements. The simulation results for radiation patterns with various excitation types are given. Lastly, the radar applications of FDA are considered. The received power from a target at a fixed range is simulated in MATLAB and the results are presented.

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Tan, Szu Hau. "Metamaterial for Radar Frequencies." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/17465.

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Approved for public release; distribution is unlimited
The objective of this thesis is to investigate a new design of periodic metamaterial (MTM) structure for radar cross-section (RCS) reduction application on aircraft and ships. MTMs are man-made materials, not found in nature, that exhibit unusual properties in the radio-, electromagnetic-, and optical-wave bands. The cells of these periodic MTM structures must be much smaller than the wavelength of the frequency of interest. In a MTM, the structure and dimensions of the design at the frequency of interest can produce negative values of permeability and/or permittivity, which define the electrical properties of the MTM. This study looks at various designs of absorbing layers presented in technical papers and verifies the results in simulations. Modifications are done to the existing designs to achieve good absorption level at the radar-frequency band of interest. Modeling and simulation are done in Microwave Studio by Computer Simulation Technology (CST). The S-parameters S11 (reflection coefficient) and S12 (transmission coefficient) are used to investigate the performance of the MTM as a radar-frequency absorber.

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Anderson, Michael D., and Gurnam Singh Gill. "Resolution in radar mapping." Thesis, Monterey, California: Naval Postgraduate School, 1993. http://hdl.handle.net/10945/24223.

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Ong, Peng Ghee, and Haw Kiad Teng. "Digital LPI Radar Detector." Thesis, Monterey, California: Naval Postgraduate School, 2001. http://hdl.handle.net/10945/43859.

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The function of a Low Probability ofIntercept (LPI) radar is to prevent its interception by an Electronic Support (ES) receiver. This objective is generally achieved through the use of a radar waveform that is mismatched to those waveforms for which an ES receiver is tuned. This allows the radar to achieve a processing gain, with respect to the ES receiver, that is equal to the time-bandwidth product ofthe radar waveform. This processing gain allows the LPI radar to overcome the range-squared advantage ofthe ES receiver in conventional situations. Consequently, a conventional ES receiver can only detect an LPI radar at very short ranges (<3 nm). The focus of this thesis was to develop an ES receiver to detect LPI radar signals with the same sensitivity as conventional pulse signals. It implements a detector which employs a technique, known as "deramping," that forms an adaptive matched filter to the linear FMCW LPI radar signal in order to achieve the processing gain that is equal to the received signal's time-bandwidth product. An experimental transmitter was built to emulate the radar signal with FMCW characteristics and transmitted through a standard gain horn. The transmitted signal is then received via a receiver horn, mixed down to an intermediate frequency (IF), sampled by an A/D convenor and digitally deramped using a Pentium II computer. It was demonstrated that the LPI radar signal can be extracted from the noise background by means of digital deramping

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Howland, Paul Edward. "Television based bistatic radar." Thesis, University of Birmingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275123.

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Jahangir, Mohammed. "Coherent radar clutter statistics." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313422.

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Daniel, Liam Yannick. "Maritime forward scatter radar." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7831/.

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This thesis is dedicated to the study of forward scatter radar (FSR) in the marine environment. FSR is a class of bistatic radar where target detection occurs at very large bistatic angle, close to the radar baseline. It is a rarely studied radar topology and the maritime application is a completely novel area of research. The aim is to develop an easily deployed buoy mounted FSR network, which will provide perimeter protection for maritime assets—this thesis presents the initial stages of investigation. It introduces FSR and compares it to the more common monostatic/bistatic radar topologies, highlighting both benefits and limitations. Phenomenological principles are developed to allow formation of forward scatter signal models and provide deeper understanding of the parameters effecting the operation of an FSR system. Novel FSR hardware has been designed and manufactured and an extensive measurement campaign undertaken. The outcome of this was the creation of the first comprehensive maritime FSR target and clutter signal database—results from which have been shown with preliminary analysis. Alongside experimental work, a sea surface model has been produced in order to estimate the effects of wave blocking in high sea states and assess FSR performance in these conditions.

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Chin, Yue Hann. "Radar tracking system development." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/30368.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references (leaf 65).
The Airborne Seeker Test Bed (ASTB) is an airborne sensor testing platform operated by the Tactical Defense Systems group at MIT Lincoln Laboratory. The Instrumentation Head (IH) is a primary sensor on the ASTB. It is a passive X-band radar receiver located on the nose of the plane. The IH serves as a truth sensor for other RF systems on the test bed and is controlled by an onboard tracking system, the Seeker Computer. The Seeker Computer processes IH data in real-time to track targets in Doppler, angle, and range. From these tracks it then produces angle-error feedback signals that command the IH gimbals, keeping targets centered along the antenna boresight. Over three years, a new Seeker Computer was built to replace an old system constrained by obsolete hardware. The redevelopment project was a team effort and this thesis presents a systems-level analysis of the design process, the new Seeker Computer system, and the related team and individual contributions to software and digital signal processing research that took place during development.
by Yue Hann Chin.
M.Eng.

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39

Brown, J. W. A. "FM airborne passive radar." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1397756/.

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The airborne application of Passive Bistatic Radar (PBR) is the latest evolution of the now established international interest in passive radar techniques. An airborne passive system is cheaper to construct, easier to cool, lighter and requires less power than a traditional active radar system. These properties make it ideal for installation on an Unmanned Aerial Vehicle (UAV), especially for the next generation of Low Observable (LO) UAVs, complementing the platforms LO design with an inherently Low Probability of Intercept (LPI) air-to-air and air-to-ground sensing capability. A comprehensive literature review identified a lack of practical and theoretical research in airborne passive bistatic radar and a quantitative model was designed in order to un- derstand the theoretical performance achievable using a hypothetical system and FM as the illuminator of opportunity. The results demonstrated a useable surveillance volume, assuming conservative estimates for the receiver parameters and allowed the scoping and specification of an airborne demonstrator system. The demonstrator system was subsequently designed and constructed and flown on airborne experiments to collect data for both air-to-air and air-to-ground operation analysis. Subsequent processing demonstrated the successful detection of air targets which correlated with the actual aircraft positions as recorded by a Mode-S/ADS-B receiver. This is the first time this has been conclusively demonstrated in the literature. Doppler Beam Sharpening was used to create a coarse resolution image allowing the normalised bistatic clutter RCS of the stationary surface clutter to be analysed. This is the first time this technique has been applied to an airborne passive system and has yielded the first quantitive values of normalised bistatic clutter RCS at VHF. This successful demonstration of airborne passive radar techniques provides the proof of concept and identifies the key research areas that need to be addressed in order to fully develop this technology.

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Commin, Henry. "Spatiotemporal arrayed MIMO radar." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/12637.

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In the last decade, Multiple Input Multiple Output (MIMO) radar has emerged as a leading candidate for stimulating major new advancement in radar theory. A fundamental challenge in MIMO radar is to identify a theoretical framework within which the radar system may be represented and analysed. In the relatively well-established field of Single Input Multiple Output (SIMO) array signal processing, this task has already been achieved using the array manifold (which is a geometric object that completely characterises the array system). A central objective of this thesis is therefore to bridge the gap between SIMO and MIMO by developing a manifold representation of the MIMO radar system. A new differential geometric framework, based on the complex Cartan matrix, is exploited in this thesis for characterising array manifold curves. New formulas are presented for recursively calculating the strictly orthonormal moving frame, U(s), and corresponding complex Cartan Matrix, C(s), for arbitrary array geometries. The circular approximation of the array manifold is derived under this new framework and compact closed-form expressions are provided for the popular uniform linear array geometry. Based on a number of approximations derived using the circular approximation of the array manifold, the performance capabilites of various popular detection and parameter estimation algorithms are investigated. The figure of merit "C" is then used to place these capabilities into the context of the theoretically ideal algorithm. The concept of a virtual SIMO array system is used as a basis for characterising the full MIMO radar configuration using a single equivalent response vector. By tracing out this response vector across the whole parameter space, a manifold is formed that fully characterises the MIMO radar system. In the important case of orthogonal transmit waveforms, the fundamental performance bounds of the MIMO radar system are studied. A space-time receiver architecture is proposed which exploits the virtual SIMO structure as part of a subspace-based joint Doppler, delay and direction of arrival (DOA) estimation framework. Due to the great computational burden of an exhaustive 3-parameter search, the joint Doppler-delay-DOA estimation is partitioned into an equivalent two-stage algorithm. The proposed approach is evaluated via computer simulation studies and shown to outperform existing methods.

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Petrillo, Luca. "Plasmonique pour radar HF." Paris 6, 2011. http://www.theses.fr/2011PA066553.

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Marzouki, Abdelwaheb. "Segmentation statistique d'images radar." Lille 1, 1996. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1996/50376-1996-304.pdf.

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Cette thèse est consacrée a la segmentation statistique non supervisée des images radar. L'originalité de notre étude réside dans l'adoption du système de distributions de Pearson pour modéliser les scènes naturelles homogènes. Nous généralisons les méthodes d'estimation employées pour un mélange de distributions de même loi a un mélange de distributions de lois différentes et appartenant au système de Pearson. Des algorithmes d'estimation bases sur la maximisation de la vraisemblance et sur la notion de l’Esperance conditionnelle ont été développes afin d'accomplir cette tâche. Les méthodes d'estimation développées pour les images radar mono spectrales ont été généralisées pour le cas des images radar multi spectrales. Nous étudions la robustesse des algorithmes proposes à travers la segmentation d'images de synthèse et d'images radar de natures différentes.

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Luo, Kai. "MIMO radar : target localisation." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/11148.

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The research presented in this thesis is concerned with multi-target localisation in MIMO radar. In particular, the aim is to develop novel algorithms which can improve the performance of target localisation. Firstly, a general spatiotemporal received signal model for MIMO radar is formulated. When the targets' relative delays are negligible, the general model turns into the spatial only signal model in which, in order to enjoy the enhanced parameter identifiability brought by the waveform diversity, a combined approach based on the virtual array structure is proposed for the multiple targets' directions and path gains estimation. The virtual array structure enables the proposed approach to identify more targets with accurate estimation. Besides, inspired by STAR manifold in communications, a novel spatiotemporal signal model for MIMO radar is proposed, which enables the existing multi-target localisation methods designed for the spatial only model working for the spatiotemporal one. Secondly, the multi-target localisation of MIMO radar operating in an envi- ronment with closely located targets is concerned. In such a scenario, the mu- tual interferences among targets severely degrade the performance of the current multi-target parameter estimators. Thus, an optimisation which takes account of the suppression of the mutual interferences for multi-target parameter estimation is formulated and the solutions to it are derived. Thirdly, based on these solu- tions, two novel multi-target parameter estimators are presented. By suppressing the interferences in the estimation, both the proposed methods outperform the existing ones. Finally, for the purpose of exploiting the high directional gain provided by the Tx beamforming in the multi-target localisation of MIMO radar, a joint Tx and Rx multi-target localisation approach is proposed. The cooperation between the Tx beamforming and target localisation enables the proposed approach to achieve better performance for the localisation of multiple targets.

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Johansson, Jonathan, and Daniel Wikdahl. "Human identification with radar." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34619.

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Yuzcelik, Cihangir Kemal. "Radar absorbing material design." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03sep%5FYuzcelik.pdf.

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Mak, Karen. "Arrayed synthetic aperture radar." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/32382.

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In this thesis, the use of array processing techniques applied to Single Input Multiple Output (SIMO) SAR systems with enhanced capabilities is investigated. In Single Input Single Output (SISO) SAR systems there is a high resolution, wide swath contradiction, whereby it is not possible to increase both cross-range resolution and the imaged swath width simultaneously. To overcome this, a novel beamformer for SAR systems in the cross-range direction is proposed. In particular, this beamformer is a superresolution beamformer capable of forming wide nulls using subspace based approaches. SIMO SAR systems also give rise to additional sets of received data, which includes geometrical information about the SAR and target environment, and can be used for enhanced target parameter estimation. In particular, this thesis looks at round trip delay, joint azimuth and elevation angle, and relative target power estimation. For round trip delay estimation, the use of the traditional matched filter with subspace partitioning is proposed. Then by using a joint 2D Multiple Signal Classification (MUSIC) algorithm, joint Direction of Arrival (DOA) estimation can be achieved. Both the use of range lines of raw SAR data and the use of a Region of Interest (ROI) of a SAR image are investigated. However in terms of imaging, MUSIC is not well-suited for SAR, due to its target response not corresponding to the target's true power return. Therefore a joint DOA and target power estimation algorithm is proposed to overcome this limitation. These algorithms provide the framework for the development of three processing techniques. These allow sidelobe suppression in the slant range direction, along with the reconstruction of undersampled data and region enhancement using MUSIC with power preservation.

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COPAC. "Radar n°4 (2017)." reponame:Repositório Institucional da UFS, 2017. http://ri.ufs.br/jspui/handle/riufs/9045.

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Lançon, Fabienne. "Extraction de signaux radar." Rennes 1, 1996. http://www.theses.fr/1996REN10163.

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Cette these concerne l'application de techniques de traitement du signal et traitement de l'information sur les emissions radar interceptees par un equipement de contre-mesures. Les themes principaux abordes lors de cette etude traitent de l'amelioration de sensibilite du recepteur, la classification et la representation des signaux radar. Apres une rapide presentation du domaine des contre-mesures, le second chapitre s'interesse a l'evaluation des performances du recepteur en termes de rapport signal-a-bruit, probabilite de detection et precision des mesures. Une etude plus precise a ete menee pour analyser statistiquement le processus aleatoire issu d'une detection quadratique apres filtrage video. Ensuite, l'introduction de traitements de post-detection, bases sur le principe de correlation, tire profit de l'integration temporelle pour ameliorer la detection de signaux a haut facteur de forme. Le quatrieme et dernier chapitre se concentre sur l'etape d'extraction des signaux radar afin de traiter les superpositions d'impulsions et les imbrications de trains d'impulsions, phenomenes de plus en plus presents dans un environnement electromagnetique plus dense et integrant des radars de complexite grandissante. C'est pourquoi definir l'impulsion comme un ou des paquets d'echantillons modifie le principe de l'extracteur. De plus, l'analyse des enchainements temporels des parametres radar aboutit a une nouvelle modelisation des signaux. Au sein d'une architecture d'extraction, nous proposons un modele base sur la representation structurelle des donnees dans le but de favoriser la separation des emissions dites complexes

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Raghavan, V. P. "High precision laser radar tracking device /." Online version of thesis, 1991. http://hdl.handle.net/1850/11453.

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Lundströmer, Torbjörn. "LPI-radar. Nys eller nytta? : Studie av den militära nyttan med LPI-radar." Thesis, Försvarshögskolan, Militärtekniska avdelningen (MTA), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-975.

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Sedan radar började användas under första hälften av 1900-talet har duellen mellan radar och signalspaning pågått. Genom att utnyttja radar har alltid en medveten risk tagits, risken att bli upptäckt av motståndarens signalspaning. Duellen gavs möjlighet att ta en paus då radarsystem med låg uteffekt introducerades på marknaden under slutet av 1980-talet, nu fanns plötsligt en möjlighet att använda radar samtidigt som de samtida signalspaningssystemen inte kunde upptäcka dessa radarsystem. I föreliggande magisteruppsats i krigsvetenskap med militärteknisk inriktning undersöks räckviddsförhållanden mellan dessa radarsystem och signalspaningssystem. Genom scenarier i den marina arenan försöker jag värdera de taktiska vinster en användare av radar med låg uteffekt kan göra. Analysen visar på att det fram till dess att signalspaningssystem med förmåga att upptäcka radar som utnyttjar låg uteffekt finns tillgängligt är det möjligt att nå taktiska fördelar med dessa system.
Since the advent of radar during the early 20th century the duel between radar and electronic support measurement systems has been practised. Using radar has always been associated with a risk of being detected by an opponent’s electronic support measurement systems. The duel came to a halt when radar systems using low output power were introduced on the market during the late 1980s, now it was possible to use radar without being detected by contemporary electronic support measurement systems. The present master of science (one year) thesis in war science with specialization in military technology looks into the range relationships between radar and electronic support measurement systems. Through scenarios in the naval domain, I seek to assess the tactical benefits a user of low probability of intercept radar may have. The analysis indicates that until electronic support measurement systems with the ability to detect radar systems using low output power are available it is still possible to gain tactical advantages with such systems.

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Dissertations / Theses on the topic 'Radar'

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