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Dissertations / Theses on the topic 'Moving target indicator radar'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Riedl, Michael Richard. "New Approaches to Ground Moving Target Indicator Radar." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469107053.

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2

Banahan, C. P. "Ground moving target indication radar with small antenna arrays." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/756558/.

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Ground Moving Target Indication (GMTI) for radars with a small number of phase centres with low processing overhead is desirable for large scale deployment of unmanned aircraft (UAVs) in ground surveillance applications. Since there are often limitations associated with communication and onboard processing on UAVs, identifying moving targets from radar data gathered by these platforms for non-GMTI purposes would be an attractive prospect. The work presented here uses real radar data to assess the performance of the Displaced Phase Centre Antenna technique (DPCA), Adaptive DPCA and Joint Domain

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3

Wu, Di. "Sparsity driven ground moving target indication in synthetic aperture radar." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31329.

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Synthetic aperture radar (SAR) was first invented in the early 1950s as the remote surveillance instruments to produce high resolution 2D images of the illuminated scene with weather-independent, day-or-night performance. Compared to the Real Aperture Radar (RAR), SAR is synthesising a large virtual aperture by moving a small antenna along the platform path. Typical SAR imaging systems are designed with the basic assumption of a static scene, and moving targets are widely known to induce displacements and defocusing in the formed images. While the capabilities of detection, states estimation a

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4

Paulus, Audrey S. "Improved target detection through extended-dwell, multichannel radar." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54279.

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The detection of weak, ground-moving targets can be improved through effective utilization of additional target signal energy collected over an extended dwell time. The signal model used in conventional radar processing limits integration of signal energy over an extended dwell. Two solutions that consider the complexity of the extended-dwell signal model and effectively combine signal energy collected over a long dwell are presented. The first solution is a single-channel algorithm that provides an estimate of the optimal detector to maximize output signal-to-interference-plus-noise ratio for

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5

Bourassa, Rene Benoit Paul. "A multiple aperture feed system for ground moving target indication (GMTI) radar applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/MQ44900.pdf.

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6

Ispir, Mehmet. "Design Of Moving Target Indication Filters With Non-uniform Pulse Repetition Intervals." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615361/index.pdf.

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Staggering the pulse repetititon intervals is a widely used solution to alleviate the blind speed problem in Moving Target Indication (MTI) radar systems. It is possible to increase the first blind speed on the order of ten folds with the use of non-uniform sampling. Improvement in blind speed results in passband fluctuations that may degregade the detection performance for particular Doppler frequencies. Therefore, it is important to design MTI filters with non-uniform interpulse periods that have minimum passband ripples with sufficient clutter attenuation along with good range and blind vel

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7

Mosito, Katlego Ernest. "Investigation of ground moving target indication techniques for a multi-channel synthetic aperture radar." Master's thesis, Faculty of Engineering and the Built Environment, 2020. http://hdl.handle.net/11427/32289.

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Synthetic Aperture Radar (SAR) is an imaging technique that creates two dimensional images of the scattering objects in the illuminated ground scene. The objects in the illuminated ground scene may be truly stationary, e.g. buildings etc. or in motion relative to these stationary objects, e.g. cars on a highway. In SAR, the radar platform is moving during the imaging period, hence everything that the radar illuminates has motion relative to the radar platform. In order to specifically detect objects on the ground that are moving relative to stationary ground objects (often termed clutter), pro

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8

Kalender, Emre. "Parametric Estimation Of Clutter Autocorrelation Matrix For Ground Moving Target Indication." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615313/index.pdf.

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In airborne radar systems with Ground Moving Target Indication (GMTI) mode, it is desired to detect the presence of targets in the interference consisting of noise, ground clutter, and jamming signals. These interference components usually mask the target return signal, such that the detection requires suppression of the interference signals. Space-time adaptive processing is a widely used interference suppression technique which uses temporal and spatial information to eliminate the effects of clutter and jamming and enables the detection of moving targets with small radial velocity. However,

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9

Sjögren, Thomas. "Synthetic Aperture Radar Signal and Image Processing for Moving Target Indication and Side Lobe Suppression." Doctoral thesis, Blekinge Tekniska Högskola, Avdelningen för elektroteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00542.

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The thesis summarizes a selection of my research within Synthetic Aperture Radar (SAR). Mainly the research is aimed at applying and developing signal processing methods to single channel and multi channel SAR for wideband systems. SAR systems can generate images looking very similar to optical pictures, i.e. photos, and sometimes with much finer resolution compared to optical systems orbiting Earth. SAR has also for instance been used to obtain fine resolution images of the moon, Venus and the satellites of Saturn. Other applications for SAR has is to detect changes in ice sheets and deforest

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10

Winkler, Joseph W. "An Investigation into Ground Moving Target Indication (GMTI) Using a Single-Channel Synthetic Aperture Radar (SAR)." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3555.

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Synthetic aperture radar (SAR) was originally designed as an airborne ground-imaging radar technology. But it has long been desired to also be able to use SAR imaging systems to detect, locate, and track moving ground targets, a process called Ground Moving Target Indication (GMTI). Unfortunately, due to the nature of how SAR works, it is inherently poorly suited to the task of GMTI. SAR only focuses targets and image features that remain stationary during the data collection. A moving ground target therefore does not focus in a conventional SAR image, which complicates the process of performi

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11

McIver, Stuart Roderick Arthur. "High power LDMOS L-band radar amplifiers." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4092.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The thesis details the design, construction and experimental evaluation of 30W, 35W and 250W L-Band LDMOS Radar amplifiers. Each amplifier module contains an integrated high speed power supply in order to optimize RF pulse repeatability and to improve radar MTI factor (Moving Target Indication.) As part of the work, a pulsed RF measurement system for measuring the dynamic I-V curves of a power FET was developed. Work was also done on low impedance S-parameter measurement test fixture

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12

Bang, Jeong Hwan. "Adaptive radar detection in the presence of textured and discrete interference." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49109.

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Under a number of practical operating scenarios, traditional moving target indicator (MTI) systems inadequately suppress ground clutter in airborne radar systems. Due to the moving platform, the clutter gains a nonzero relative velocity and spreads the power across Doppler frequencies. This obfuscates slow-moving targets of interest near the "direct current" component of the spectrum. In response, space-time adaptive processing (STAP) techniques have been developed that simultaneously operate in the space and time dimensions for effective clutter cancellation. STAP algorithms commonly operate

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13

Makhoul, Varona Eduardo. "Ground moving target indication with synthetic aperture radars for maritime surveillance." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/288228.

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The explosive growth of shipping traffic all over the World, with around three quarters of the total trade goods and crude oil transported by sea, has raised newly emerging concerns (economical, ecological, social and geopolitical). Geo-information (location and speed) of ocean-going vessels is crucial in the maritime framework, playing a key role in the related environmental monitoring, fisheries management and maritime/coastal security. In this scenario space-based synthetic aperture radar (SAR) remote sensing is a potential tool for globally monitoring the oceans and seas, providing two-di

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14

Riedl, Grant H. "Advanced research into moving target imaging using multistatic radar." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FRiedl.pdf.

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Thesis (M.S. in Applied Physics)--Naval Postgraduate School, December 2009.<br>Thesis Advisor: Borden, Brett. Second Reader: Walters, Donald. "December 2009." Description based on title screen as viewed on January 29, 2010. Author(s) subject terms: Moving Target Imaging, multistatic radar, computer simulation. Includes bibliographical references (p. 31). Also available in print.

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15

Kohlleppel, Robert [Verfasser]. "Ground moving target tracking with space-time adaptive radar / Robert Kohlleppel." Siegen : Universitätsbibliothek der Universität Siegen, 2015. http://d-nb.info/107199199X/34.

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16

Oztan, Baha Baran. "Linear Prediction For Single Snapshot Multiple Target Doppler Estimation Under Possibly Moving Radar Clutter." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609741/index.pdf.

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We have devised a processor for pulsed Doppler radars for multi-target detection in same folded range under land and moving clutter. To this end, we have investigated the estimation of parameters, i.e., frequencies, amplitudes, and phases, of complex exponentials that model target echoes under radar clutter characterized by antenna scanning modulation with observation limited to single snapshot, i.e., one burst. The Maximum Likelihood method of estimation is presented together with the bounds on estimates, i.e., Cram&eacute<br>r-Rao bounds. We have analyzed linear prediction, together with its

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17

Yankevich, Evgeny. "Design of an Airborne Multi-input Multi-output Radar Emulator Testbed for Ground Moving Target Identification Applications." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1345571650.

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18

Torvik, B. "Investigation of non-cooperative target recognition of small and slow moving air targets in modern air defence surveillance radar." Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1532017/.

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This thesis covers research in the field of non-cooperative target recognition given the limitations of modern air defence surveillance radars. The potential presence of low observable manned or unmanned targets within the vast surveillance volume demand highly sensitive systems. This may again introduce unwanted detections of single birds of comparable radar cross section, previously avoided by use of wide clutter rejection filters and sensitivity time control. The demand for methods effectively separating between birds and slow moving manmade targets is evident. The research questions addres

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19

Hurtubise, Jean. "Spotlight synthetic aperture radar adaptive mode algorithm for the CP-140 aurora, cross-range image improvement of a moving target at sea." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/MQ44847.pdf.

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20

Tufan, Burcu. "Comparison Of Emitter Localization Methods With A Moving Platform In Three Dimensions." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614708/index.pdf.

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In passive target localization, source position is estimated by only using the source signal. In this thesis, position of a stationary target is estimated by using the data collected by a moving platform. Since the focus of the thesis is the location estimation, the parameters used for localization such as angle-of-arrival (AOA), time-difference-of-arrival (TDOA), Doppler frequency shift are assumed to be known. Different emitter localization methods are implemented in this thesis. Some of these methods are known in the literature and some are the modified or hybrid versions of these algorithm

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21

Kazemisaber, Mohammadreza. "Clutter Removal in Single Radar Sensor Reflection Data via Digital Signal Processing." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-99874.

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Due to recent improvements, robots are more applicable in factories and various production lines where smoke, fog, dust, and steam are inevitable. Despite their advantages, robots introduce new safety requirements when combined with humans. Radars can play a crucial role in this context by providing safe zones where robots are operating in the absence of humans. The goal of this Master’s thesis is to investigate different clutter suppression methods for single radar sensor reflection data via digital signal processing. This was done in collaboration with ABB Jokab AB, Sweden. The calculations

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22

Poisson, Jean-Baptiste. "Reconstruction de trajectoires de cibles mobiles en imagerie RSO aéroportée." Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0084/document.

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L’imagerie RSO circulaire aéroportée permet d’obtenir de nombreuses informations sur les zones imagées et sur les cibles mobiles. Les objets peuvent être observés sous plusieurs angles, et l’illumination continue d’une même scène permet de générer plusieurs images successives de la même zone. L’objectif de cette thèse est de développer une méthode de reconstruction de trajectoire de cibles mobiles en imagerie RSO circulaire monovoie, et d’étudier les performances de la méthode proposée. Nous avons tout d’abord mesuré les coordonnées apparentes des cibles mobiles sur les images RSO et leur para

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23

Vestin, Albin, and Gustav Strandberg. "Evaluation of Target Tracking Using Multiple Sensors and Non-Causal Algorithms." Thesis, Linköpings universitet, Reglerteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160020.

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Today, the main research field for the automotive industry is to find solutions for active safety. In order to perceive the surrounding environment, tracking nearby traffic objects plays an important role. Validation of the tracking performance is often done in staged traffic scenarios, where additional sensors, mounted on the vehicles, are used to obtain their true positions and velocities. The difficulty of evaluating the tracking performance complicates its development. An alternative approach studied in this thesis, is to record sequences and use non-causal algorithms, such as smoothing, i

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24

HAUWEI-HUANG and 黃皓維. "The Research of Moving Target Indicator for Radar Systems." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/14570385061993975213.

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碩士<br>大葉大學<br>電機工程學系碩士在職專班<br>94<br>Radar systems play an important role in the applications of both civil and defense systems. Their major tasks are detecting and tracking targets. One moving target indicator is developed in this thesis. The MTI will remove the clutter and detect the moving target effectively. Moreover, the applications of kalman filter and radar tracking system for the moving target tracking. In order to prove this algorithm, a simulation program using Mablab is conducted also.

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25

"An approach to ground moving target indication using multiple resolutions of multilook synthetic aperture radar images." UNIVERSITY OF KANSAS, 2010. http://pqdtopen.proquest.com/#viewpdf?dispub=3387060.

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26

Naething, Richard Maxwell. "Enhanced inverse synthetic aperture radar." 2010. http://hdl.handle.net/2152/9855.

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Synthetic aperture radar (SAR) is an imaging technique based on the radio reflectivity of the target being imaged. SAR instruments offer many advantages over optical imaging due to the ability to form coherent images in inclement weather, at night, and through ground cover. High resolution is achieved in azimuth through a synthesized aperture much larger than the physical antenna of the imaging device. Consequently, proper focusing requires accurate information about the relative motion between the antenna phase center and the scene. Any unknown target velocity, acceleration, rotation, or vibr

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27

劉天佑. "An analysis and computer simulations of moving target indicator filters." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/93871596764722894440.

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28

Lee, Meng-Han, and 李孟翰. "A Simulation Study of Ground-Moving Target Indicator by SIMO-Based SAR System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/92252003214762545929.

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碩士<br>國立中央大學<br>太空科學研究所<br>101<br>In this thesis, we propose a single-input multi–output (SIMO) scheme to improve the performance of conventional ground-moving target indicator based on Displaced Phase Centre Antenna (DPCA) technique and Along-Track Interferometry (ATI). The Displaced Phase Centre Antenna method is firstly applied to remove the undesired clutter and to enhance the signal to noise ratio from a moving target, followed by using along-track Interferometry to determine target’s position. In so doing, the method combining these two techniques offers a significant improvement of de

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29

Risi, Benjamin. "Propulsion System Development for the CanX-4 and CanX-5 Dual Nanosatellite Formation Flying Mission." Thesis, 2014. http://hdl.handle.net/1807/65601.

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The Canadian Nanosatellite Advanced Propulsion System is a liquefied cold-gas thruster system that provides propulsive capabilities to CanX-4/-5, the Canadian Advanced Nanospace eXperiment 4 and 5. With a launch date of early 2014, CanX-4/-5's primary mission objective is to demonstrate precise autonomous formation flight of nanosatellites in low Earth orbit. The high-level CanX-4/-5 mission and system architecture is described. The final design and assembly of the propulsion system is presented along with the lessons learned. A high-level test plan provides a roadmap of the testing require

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