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Detection Of Ground Targets By Radar
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Book Synopsis Enhanced Detection of Ground Targets by Airborne Radar by : Donald Patrick Bruyere
Download or read book Enhanced Detection of Ground Targets by Airborne Radar written by Donald Patrick Bruyere and published by . This book was released on 2008 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation deals with techniques that enhance the detection of ground targets by airborne radar. The methods employed deal with the problem of air to ground detection by breaking the problem into two broad categories. The first category deals with improving detection of moving targets by using space-time adaptive processing (STAP) in a multistatic configuration. Mult-static STAP provides increased detection performance by observing targets from multiple perspectives. Multiple viewing perspectives afford more opportunities to the combined system for observing radial velocity of the target more directly, thus increasing Doppler that helps distinguish the target from background clutter. Detection performance also improves through an increased number of independent observations of a target, which reduces the likelihood of the target fading for the combined system. Increasing detection performance by increasing the number of independent observationsis referred to in communications theory as channel diversity. The second part of this dissertation deals with the problem of distinguishing stationary targets from background clutter within a Synthetic Aperture Radar image. Stationary target discrimination is accomplished by exploiting the statistical nature of multifaceted metallic objects within a scene. The performance improvement for both moving and non-moving improvement methods is characterized and compared to other systems that attempt to accomplish the same end using different means.
Author :United States. Army. European Theater of Operations. War Department Observers Board Publisher : ISBN 13 : Total Pages :3 pages Book Rating :4.:/5 (123 download)
Book Synopsis Detection of Ground Targets by Radar by : United States. Army. European Theater of Operations. War Department Observers Board
Download or read book Detection of Ground Targets by Radar written by United States. Army. European Theater of Operations. War Department Observers Board and published by . This book was released on 1945 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radar Automatic Target Recognition (ATR) and Non-Cooperative Target Recognition (NCTR) by : David Blacknell
Download or read book Radar Automatic Target Recognition (ATR) and Non-Cooperative Target Recognition (NCTR) written by David Blacknell and published by IET. This book was released on 2013-08-23 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radar Automatic Target Recognition (ATR) and NonCooperative Target Recognition (NCTR) captures material presented by leading international experts at a NATO lecture series and explores both the fundamentals of classification techniques applied to data from a variety of radar modes and selected advanced techniques at the forefront of research. The ability to detect and locate targets by day or night, over wide areas, regardless of weather conditions has long made radar a key sensor in many military and civil applications. However, the ability to automatically and reliably distinguish different targets represents a difficult challenge, although steady progress has been made over the past couple of decades. This book explores both the fundamentals of classification techniques applied to data from a variety of radar modes and selected advanced techniques at the forefront of research. Topics include: the problem as applied to the ground, air and maritime domains; impact of image quality on the overall target recognition performance; performance of different approaches to the classifier algorithm; improvement in performance to be gained when a target can be viewed from more than one perspective; ways in which natural systems perform target recognition; impact of compressive sensing; advances in change detection, including coherent change detection; and challenges and directions for future research.
Book Synopsis An Airborne Radar Technique for Moving-target Detection, Location, and Tracking by : John K. Schindler
Download or read book An Airborne Radar Technique for Moving-target Detection, Location, and Tracking written by John K. Schindler and published by . This book was released on 1973 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel technique for detecting, locating, and tracking moving targets from an airborne radar platform is described and analyzed. The technique uses the generally dissimilar linear doppler frequency modulated signals from moving targets and stationary ground clutter. A matched filter processor is defined and its resolution and ambiguity properties studied as function processor parameters. Sub-clutter visibility of the processor is then determined. Two techniques for digitally implementing the processor are discussed and the computational efficiencies briefly analyzed. Finally, target angular position can be determined using phase monopulse. It is then shown that target velocity--both ground speed and target heading--can be determined from radar observables. (Author).
Book Synopsis Computer Simulation of Aerial Target Radar Scattering, Recognition, Detection, and Tracking by : Yakov D. Shirman
Download or read book Computer Simulation of Aerial Target Radar Scattering, Recognition, Detection, and Tracking written by Yakov D. Shirman and published by Artech House. This book was released on 2002 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here's a ground-breaking new book that provides you with the knowledge you need to perform effective computer simulation of scattering for the real targets and conditions of radio wave propagation. By replacing field tests with the computer simulation methods presented in this unique resource, you save time and money in the early stages of research and development.
Book Synopsis Investigation of Ground Target Detection Methods in Fully Polarimetric Wide Angle Synthetic Aperture Radar Images by :
Download or read book Investigation of Ground Target Detection Methods in Fully Polarimetric Wide Angle Synthetic Aperture Radar Images written by and published by . This book was released on 1995 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Target detection is a high priority of the Air Force for the purpose of reconnaissance and bombardment. This research investigates and develops methods to distinguish ground targets from clutter (i.e. foliage, landscape etc.) in Wide Angle Synthetic Aperture Radar (WASAR) images. WASAR uses multiple aspect angle SAR images of the same target scene. The WASAR data was generated from a pre-release software package (XPATCH-ES) provided by the sponsor (WL-AARA). A statistical analysis and feature extraction is performed on the XPATCH-ES data. Polarimetric and wide angle covariance matrices are estimated and analyzed. From an analysis of the wide angle covariance matrix it is shown that natural clutter has in general a uniform radar return for changing aspect angles, whereas the radar return for a target varies. Based on this analysis, two new wide angle algorithms, the WASAR Whitening Filter and the Adaptive WASAR Whitening Filter (AWWF) are developed. The target detection performance of polarimetric and multi aspect angle image combining algorithms are quantified using Receiver Operating Characteristic curves and target to clutter ratios. It is shown that wide angle processing provides superior target detection performance over polarimetric processing. Combinations of wide angle and polarimetric algorithms were used to achieve a 13.7 dB processing gain in target to clutter ratio when compared to unprocessed images of the target scene. This represents a significant improvement in target detection capabilities.
Book Synopsis Detection And Identification Of Visually Obscured Targets by : Carl E. Baum
Download or read book Detection And Identification Of Visually Obscured Targets written by Carl E. Baum and published by Routledge. This book was released on 2019-09-26 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with a review of the current need for identification of buried and surface unexplored ordnance such as mines, shells, bombs, this book then explains existing techniques for electromagnetic detection of such targets. A detailed treatment of target signatures (natural frequencies and related parameters) for identification and discrimination of false alarms is also given.
Book Synopsis Alternatives for Military Space Radar by : Joseph A. Post
Download or read book Alternatives for Military Space Radar written by Joseph A. Post and published by . This book was released on 2007 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: "DoD's 2006 Quadrennial Defense Review calls for investment in such systems to grow in order to provide 'a highly persistent capability to identify and track moving ground targets in denied areas.' To that end, DoD and the National Reconnaissance Office are proposing to develop a constellation of Earth-orbiting Space Radar satellites that would provide imagery, GMTI, and geospatial intelligence products to members of the military and the intelligence community. This Congressional Budget Office (CBO) study--prepared at the request of Senators Wayne Allard and Bill Nelson in their respective capacities as the Chairman and Ranking Member of the Senate Committee on Armed Services' Subcommittee on Strategic Forces--examines the costs and potential performance of four possible designs for a Space Radar system."--Preface.
Book Synopsis Air and Spaceborne Radar Systems by : Philippe Lacomme
Download or read book Air and Spaceborne Radar Systems written by Philippe Lacomme and published by William Andrew. This book was released on 2001 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended for actual users of radar, the book focuses on the history, main principles, functions, modes, properties and specific nature of modern airborne radar. It examines radar's role within the system when carrying out its assigned missions, showing the possibilities of radar, it's limitations and a discussion of how radar may evolve in the future.
Book Synopsis Foliage Penetration Radar by : Mark E. Davis
Download or read book Foliage Penetration Radar written by Mark E. Davis and published by IET. This book was released on 2011-06-30 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers all aspects of foliage penetration (FOPEN) radar for both airborne military systems and earth resource mapping. It is the first book to be published on the subject.
Book Synopsis Knowledge-Base Application to Ground Moving Target Detection by :
Download or read book Knowledge-Base Application to Ground Moving Target Detection written by and published by . This book was released on 2001 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a multi-year in-house effort to apply knowledge-base control techniques and advanced Space-Time Adaptive Processing algorithms to improve detection performance and false alarm control in Ground Moving Target Indication Airborne Radar.
Download or read book ספר משכיל לאיתן written by and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Ultrawideband Radar by : James D. Taylor
Download or read book Advanced Ultrawideband Radar written by James D. Taylor and published by CRC Press. This book was released on 2016-12-19 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest theory, developments, and applications related to high resolution materials-penetrating sensor systems. An international team of expert researchers explains the problems and solutions for developing new techniques and applications. Subject areas include ultrawideband (UWB) signals propagation and scattering, materials-penetrating radar techniques for small object detection and imaging, biolocation using holographic techniques, tomography, medical applications, nondestructive testing methods, electronic warfare principles, through-the-wall radar propagation effects, and target identification through measuring the target return signal spectrum changes.
Book Synopsis Investigation of Ground Target Detection Methods in Fully Polarimetric Wide Angle Synthetic Aperture Radar Images by : Wayne B. McLaggan (FLT LT, Royal Australian Air Force.)
Download or read book Investigation of Ground Target Detection Methods in Fully Polarimetric Wide Angle Synthetic Aperture Radar Images written by Wayne B. McLaggan (FLT LT, Royal Australian Air Force.) and published by . This book was released on 1995 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Doppler Target Detection in Ground Clutter by :
Download or read book Low Doppler Target Detection in Ground Clutter written by and published by . This book was released on 1985 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to show that a large portion of ground clutter in radar returns possesses a long-term stable coherent component and to use this characteristic of the clutter to establish the merits of coherent clutter processing. The report first examines the coherent nature of ground clutter and its statistical representation in the phase plane. It then describes the effect of coherent clutter on various detection schemes and defines the coherent-to-diffuse power ratio as a measure for comparison. Experimental evidence to support a suggested model for ground clutter, and to describe the extent to which the model holds for different terrain types, seasons, wind speeds, and times of day is presented. Experimental clutter results are used to demonstrate the detectability of low-Doppler targets in real ground clutter and to show the merits of a coherent clutter map. The final section summarizes the main results and suggests directions for further work.
Book Synopsis Radar Return from Targets Hidden by Ground Clutter by : Werner W. Gerbes
Download or read book Radar Return from Targets Hidden by Ground Clutter written by Werner W. Gerbes and published by . This book was released on 1967 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical solution to the problem of radar return from objects hidden by ground clutter is formulated in this report. The solution is based on a model in which metal targets are simulated by the substitution of metal for the ground. A comparison of the returned signal from the simulated target with the returned signal from the earth is obtained, and calculated values are graphically presented for various values of dielectric constants, conductivities, and depth of clutter. (Author).
Book Synopsis An Airborne Radar Technique for Moving-target Detection, Location, and Tracking by : John K. Schindler
Download or read book An Airborne Radar Technique for Moving-target Detection, Location, and Tracking written by John K. Schindler and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel technique for detecting, locating, and tracking moving targets from an airborne radar platform is described and analyzed. The technique uses the generally dissimilar linear doppler frequency modulated signals from moving targets and stationary ground clutter. A matched filter processor is defined and its resolution and ambiguity properties studied as function processor parameters. Sub-clutter visibility of the processor is then determined. Two techniques for digitally implementing the processor are discussed and the computational efficiencies briefly analyzed. Finally, target angular position can be determined using phase monopulse. It is then shown that target velocity--both ground speed and target heading--can be determined from radar observables. (Author)
