Download or read book Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR written by Jian Yang and published by Springer. This book was released on 2017-01-09 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a detailed analysis of the signal model of the moving target, this thesis focuses on the theories and applications of ground moving target indicator (GMTI) and ground moving target imaging (GMTIm) algorithms in synthetic aperture radar/ ground moving target indicator (SAR/GMTI mode), wide-area surveillance ground moving target indication (WAS-GMTI) mode and frequency modulated continuous wave synthetic aperture radar (FMCW SAR) systems. The proposed algorithms can not only indicate and image fast-moving targets, but are also effective in the context of slow-moving target processing. The system design scheme combines the mechanical scanning mode and the airborne SAR system, while the azimuth moving target indication algorithm employs the additional range walk migration induced by FMCW SAR systems. In addition, the non-ideal errors that deteriorate the performance of GMTIm algorithms in real SAR data processing are discussed, and suitable compensation methods are provided.>
Download or read book An Investigation Into Ground Moving Target Indication GMTI Using a Single channel Synthetic Aperture Radar SAR written by Joseph W. Winkler and published by . This book was released on 2013 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the feasibility of performing GMTI with single-channel, unsquinted, broadside stripmap SAR despite this inherent limitation. This study focuses solely on the idealized case of direct energy returns from point targets on flat ground, where they and the airborne radar platform all move rectilinearly with constant speed.
Download or read book Sub Nyquist Synthetic Aperture Radar Imaging and Ground Moving Target Indication written by Abdulmalik Aldharrab and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Technology of Synthetic Aperture Radar written by Jiaguo Lu and published by John Wiley & Sons. This book was released on 2019-08-26 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative work on Synthetic Aperture Radar system engineering, with key focus on high resolution imaging, moving target indication, and system engineering technology Synthetic Aperture Radar (SAR) is a powerful microwave remote sensing technique that is used to create high resolution two or three-dimensional representations of objects, such as landscapes, independent of weather conditions and sunlight illumination. SAR technology is a multidisciplinary field that involves microwave technology, antenna technology, signal processing, and image information processing. The use of SAR technology continues grow at a rapid pace in a variety of applications such as high-resolution wide-swath observation, multi-azimuth information acquisition, high-temporal information acquisition, 3-D terrain mapping, and image quality improvement. Design Technology of Synthetic Aperture Radar provides detailed coverage of the fundamental concepts, theories, technology, and design of SAR systems and sub-systems. Supported by the author’s over two decades of research and practice experience in the field, this in-depth volume systematically describes SAR design and presents the latest research developments. Providing examination of all topics relevant to SAR—from radar and antenna system design to receiver technology and signal and image information processing—this comprehensive resource: Provides wide-ranging, up-to-date examination of all major topics related to SAR science, systems, and software Includes guidelines to conduct grounding system designs and analysis Offers coverage of all SAR algorithm classes and detailed SAR algorithms suitable for enabling software implementations Surveys SAR and computed imaging literature of the last sixty years Emphasizes high resolution imaging, moving target indication, and system engineering Design Technology of Synthetic Aperture Radar is indispensable for graduate students majoring in SAR system design, microwave antenna, signal and information processing as well as engineers and technicians involved in SAR system techniques.
Download or read book Detection of Ground Moving Objects with Synthetic Aperture Radar written by Ishuwa C. Sikaneta and published by . This book was released on 2004 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dual channel Airborne SAR Imaging of Ground Moving Targets on Perturbed Platform written by 吳道明 and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simulation Method for Studying Effects of Site specific Clutter on SAR GMTI Performance written by Marcus James Campbell and published by . This book was released on 2018 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic aperture radar (SAR) is an invaluable tool for detection of ground moving targets when combined with processing techniques of ground moving target indication (GMTI). This work investigates a simulation methodology for studying impact of site-specific ground clutter on SAR-GMTI performance. A terrain model is proposed and is based on digital terrain elevation data (DTED) and national land-use land-cover data (NLCD) as provided by the US Geological Survey. The proposed physical optics simulation method capitalizes on high-fidelity digital target models in combination with the proposed terrain model. SAR phase history is generated for a moving commercial target in situ of site specific clutter. The normalized radar cross-section (NRCS) clutter is modeled according to empirical random processes.As SAR imagery and GMTI detection performance depend on clutter, the well-known displaced phase center antenna (DPCA) algorithm is applied to test the performance of the SAR-GMTI algorithm. A Sobel gradient edge-detection technique is used to discern target energy from ground clutter in the SAR image as a means to estimate signal-to-noise-plus-interference ratio (SINR). The proposed model is shown to be suitable for studying the effects of measured clutter on SAR-GMTI performance.
Download or read book The Millimeter Wave Synthetic Aperture Radar Technology written by Hui Wang and published by Springer Nature. This book was released on with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geosynchronous SAR System and Signal Processing written by Teng Long and published by Springer. This book was released on 2018-04-20 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book chiefly addresses the analysis and design of geosynchronous synthetic aperture radar (GEO SAR) systems, focusing on the algorithms, analysis, methods used to compensate for ionospheric influences, and validation experiments for Global Navigation Satellite Systems (GNSS). Further, it investigates special problems in the GEO SAR context, such as curved trajectories, the Earth’s rotation, the ‘non-stop-and-go’ model, high-order Doppler parameters, temporal-variant ionospheric errors etc. These studies can also be extended to SAR with very high resolution and long integration time. Given the breadth and depth of its coverage, scientists and engineers in SAR and advanced graduate students in related areas will greatly benefit from this book.
Download or read book Multi Antenna Synthetic Aperture Radar written by Wen-Qin Wang and published by CRC Press. This book was released on 2013-05-22 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic aperture radar (SAR) is a well-known remote sensing technique, but conventional single-antenna SAR is inherently limited by the minimum antenna area constraint. Although there are still technical issues to overcome, multi-antenna SAR offers many benefits, from improved system gain to increased degrees-of-freedom and system flexibility. Multi-Antenna Synthetic Aperture Radar explores the potential and challenges of using multi-antenna SAR in microwave remote sensing applications. These applications include high-resolution imaging, wide-swath remote sensing, ground moving target indication, and 3-D imaging. The book pays particular attention to the signal processing aspects of various multi-antenna SAR from a top-level system perspective. Explore Recent Extensions of Synthetic Aperture Radar Systems The backbone of the book is a series of innovative microwave remote sensing approaches developed by the author. Centered around multi-antenna SAR imaging, these approaches address specific challenges and potential problems in future microwave remote sensing. Chapters examine single-input multiple-output (SIMO) multi-antenna SAR, including azimuth and elevation multi-antenna SAR, and multiple-input multiple-output (MIMO) SAR. The book details the corresponding system scheme, signal models, time/phase/spatial synchronization methods, and high-precision imaging algorithms. It also investigates their potential applications. Introductory Tutorials and Novel Approaches in Multi-Antenna SAR Imaging Rigorous and self-contained, this is a unique reference for researchers and industry professionals working with microwave remote sensing, SAR imaging, and radar signal processing. In addition to novel approaches, the book also presents tutorials that serve as an introduction to multi-antenna SAR imaging for those who are new to the field.
Download or read book Inverse Synthetic Aperture Radar Imaging written by Victor C. Chen and published by IET. This book was released on 2014-09 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the latest research on ISAR imaging of moving targets and non-cooperative target recognition (NCTR). With a focus on the advances and applications, it provides readers with a working knowledge of various algorithms of ISAR imaging of targets and implementation with MATLAB.
Download or read book An Analysis of RADARSAT2 SAR GMTI Performance for Standard Beam Mode written by Defence Research Establishment Ottawa and published by . This book was released on 2000 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Adaptive Multi channel ATI SAR for Moving Target Detection written by and published by . This book was released on 2006 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Along-track interferometry (ATI) is a Synthetic Aperture Radar (SAR) technique for moving target detection and estimation of radial velocities. The conventional ATI-SAR involves the acquisition of data from two channels that are separated in the direction of flight path. While the stationary targets share the same signature in the SAR images of these two channels, the moving targets exhibit phase shifts between the two SAR images. Thus, we can identify the moving targets by examining the phase information of the SAR interferogram. For a multi-channel SAR system, SAR interferogram cannot fully exploit the phase information of all channels. In this dissertation, we examine the possibility of generating the moving target indication (MTI) statistic by developing a multi-channel ATI-SAR processing method. The merits of this method are vigorously studied using both simulated data and real data from Multi-Channel Airborne Radar Measurement (MCARM) system. The method we proposed is not feasible without the full calibration of all channels. To deal with this issue, we begin with a simple procedure called global calibration, which is mainly adopted to compensate the physical distance between the two channels in the along-track domain. It is known that the MTI ability of ATI-SAR is substantially affected by the drift angle of the moving platform. As an integral part of this dissertation, we will discuss the effect of drift angle from a STAP point of view. We will also introduce a STAP approach to estimate platform velocity as well as drift angle. The estimation of drift angle does not account for various sources of other errors. To fine calibrate these errors, including which are caused by the drift angle, a two-dimensional (2D) adaptive filtering algorithm called signal subspace processing (SSP) is introduced. The SSP algorithm is applied in the SAR image domain to address the spatially-varying nature of the calibration errors. The SSP algorithm is too time-consuming for a practical radar system. In the final part of this dissertation, we will discuss the parallelization of the proposed multi-channel ATI-SAR processing method and its implementation on high performance computing clusters (HPCC).
Download or read book Design Technology of Synthetic Aperture Radar written by Jiaguo Lu and published by John Wiley & Sons. This book was released on 2019-08-07 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative work on Synthetic Aperture Radar system engineering, with key focus on high resolution imaging, moving target indication, and system engineering technology Synthetic Aperture Radar (SAR) is a powerful microwave remote sensing technique that is used to create high resolution two or three-dimensional representations of objects, such as landscapes, independent of weather conditions and sunlight illumination. SAR technology is a multidisciplinary field that involves microwave technology, antenna technology, signal processing, and image information processing. The use of SAR technology continues grow at a rapid pace in a variety of applications such as high-resolution wide-swath observation, multi-azimuth information acquisition, high-temporal information acquisition, 3-D terrain mapping, and image quality improvement. Design Technology of Synthetic Aperture Radar provides detailed coverage of the fundamental concepts, theories, technology, and design of SAR systems and sub-systems. Supported by the author’s over two decades of research and practice experience in the field, this in-depth volume systematically describes SAR design and presents the latest research developments. Providing examination of all topics relevant to SAR—from radar and antenna system design to receiver technology and signal and image information processing—this comprehensive resource: Provides wide-ranging, up-to-date examination of all major topics related to SAR science, systems, and software Includes guidelines to conduct grounding system designs and analysis Offers coverage of all SAR algorithm classes and detailed SAR algorithms suitable for enabling software implementations Surveys SAR and computed imaging literature of the last sixty years Emphasizes high resolution imaging, moving target indication, and system engineering Design Technology of Synthetic Aperture Radar is indispensable for graduate students majoring in SAR system design, microwave antenna, signal and information processing as well as engineers and technicians involved in SAR system techniques.
Download or read book Enhanced Synthetic Aperture Radar SAR Imaging of Moving Targets Using the Deterministic Annealing Probabilistic Multi Hypothesis Tracker DAPMHT Approach written by Abdullah Taher and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic aperture radar (SAR) imaging of a moving target has been the subject of interest in both military surveillance, reconnaissance, and civilian remote-sensing applications because of its high-resolution target imaging and tracking capability. Current SAR moving target imaging requires that estimates of the target states be obtained before any imaging can be performed. Processing SAR data accurately will produce an efficient image; however, SAR was primarily designed for the imaging of stationary targets. Thus, for imaging moving targets, traditional SAR algorithms suffer from low imaging quality (i.e., blurring), inaccurate target state estimation, and the inability to solve for displacement/defocusing due to the target's uncertain motion. As a result, degraded target image quality. This dissertation addresses these particular challenges and presents an analysis of the effects of moving targets on SAR imaging. This dissertation aims to resolve the problem of moving target imaging in SAR by combining a tracking algorithm with the SAR algorithm to maximize the overall performance and handle the complexity of SAR imaging. Our proposed processing algorithm combines deterministic annealing probabilistic multi-hypothesis tracking (DAPMHT) and range-Doppler algorithm (RDA) imaging to continuously observe a scene and generate a SAR image simultaneously. This development approach also improves the algorithm's global convergence. The DAPMHT method is adapted in this dissertation as the basis for a principal and overall study of SAR imaging of moving targets. This work focuses on cases of direct energy returns from point targets and extended targets that are moving along a straight-line path or maneuvering. The proposed algorithm's advantages are: (i) the final SAR image does not need to be modified because all the target motions are compensated for during the image formation process (ii) both point and extended moving targets can be tracked and imaged without employing different filters for each target and (iii) the algorithm is capable of tracking and imaging moving targets in a dense clutter environment. This dissertation demonstrates and validates the feasibility of the DAPMHT approach. Results and work have been done to accurately estimate the target parameters and focus the moving target images; they show the effectiveness and robustness of combining the tracking DAPMHT algorithm with SAR imaging.
Download or read book Statistics of SAR Interferograms with Application to Moving Target Detection written by Christoph H. Gierull and published by . This book was released on 2001 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
