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Signal Based Motion Compensation For Synthetic Aperture Radar
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Book Synopsis Signal Based Motion Compensation for Synthetic Aperture Radar by :
Download or read book Signal Based Motion Compensation for Synthetic Aperture Radar written by and published by . This book was released on 1999 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the Signal Based Motion Compensation (SBMC) for Synthetic Aperture Radar (SAR) effort is to develop a method to measure and compensate for both down range and cross range motion of the radar in order to provide high quality focused SAR imagery in the absence of precision measurements of the platform motion. Currently SAR systems require very precise navigation sensors for motion compensation. These sensors are very expensive and are often supplied in pairs for reliability. In the case of GPS they can be jammed, further degrading performance. This makes for a potentially very expensive and possibly vulnerable SAR system. SBMC can eliminate or reduce the need for these expensive navigation sensors thus reducing the cost of budget minded SAR systems. The results on this program demonstrated the capability of the SBMC approach.
Book Synopsis Motion Compensation for Near-Range Synthetic Aperture Radar Applications by : Huaming Wu
Download or read book Motion Compensation for Near-Range Synthetic Aperture Radar Applications written by Huaming Wu and published by KIT Scientific Publishing. This book was released on 2014-07-30 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work focuses on the analysis of influences of motion errors on near-range SAR applications and design of specific motion measuring and compensation algorithms. First, a novel metric to determine the optimum antenna beamwidth is proposed. Then, a comprehensive investigation of influences of motion errors on the SAR image is provided. On this ground, new algorithms for motion measuring and compensation using low cost inertial measurement units (IMU) are developed and successfully demonstrated.
Book Synopsis A Solution for Real Time Motion Compensation for SAR (Synthetic Aperture Radar) Without Using Inertial Navigation Systems by : Joao R. Moreira
Download or read book A Solution for Real Time Motion Compensation for SAR (Synthetic Aperture Radar) Without Using Inertial Navigation Systems written by Joao R. Moreira and published by . This book was released on 1989 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reports a new solution for real time motion compensation. The main idea is to extract all the necessary motions of the aircraft from the radar backscatter signal using a new radar configuration and new methods for evaluating the azimuth spectra of the radar signal. Hence an inertial navigation system becomes unnecessary for a lot of applications. The motion compensation parameters for real time motion error correction are the range delay, the range dependent phase shift and the pulse repetition frequency. The motions of the aircraft to be extracted are the displacement in line of sight (LOS) direction, the aircraft's yaw and drift angle and forward velocity. Results show that a three look image with an azimuth resolution of 3m in L-band using a small aircraft is achievable and the implementation of this method in real time using an array processor is feasible.
Book Synopsis Synthetic Aperture Radar Processing by : Giorgio Franceschetti
Download or read book Synthetic Aperture Radar Processing written by Giorgio Franceschetti and published by CRC Press. This book was released on 2018-02-06 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic Aperture Radar Processing simply and methodically presents principles and techniques of Synthetic Aperture Radar (SAR) image generation by analyzing its system transfer function. The text considers the full array of operation modes from strip to scan, emphasizes processing techniques, enabling the design of operational SAR codes. A simple example then follows. This book will be invaluable to all SAR scientists and engineers working in the field. It may be used as the basis for a course on SAR image generation or as a reference book on remote sensing. It contains a wide spectrum of information presented with clarity and rigor.
Book Synopsis Synthetic Aperture Radar Motion Compensation Using Autofocus with Implications for Super-resolution by : David Blacknell
Download or read book Synthetic Aperture Radar Motion Compensation Using Autofocus with Implications for Super-resolution written by David Blacknell and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bistatic Synthetic Aperture Radar by : Jianyu Yang
Download or read book Bistatic Synthetic Aperture Radar written by Jianyu Yang and published by Elsevier. This book was released on 2022-01-20 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bistatic Synthetic Aperture Radar covers bistatic SAR in a comprehensive way, presenting theory, method and techniques, as well as the most recent research and near-future applications. The book begins with imaging principles and characteristics of monostatic SAR, moving on to common and novel problems before presenting theories, methods and experimental system design. The title presents the design of experimental systems, research results and experimental verification. It gives key knowledge from a leading research group, including one of the earliest bistatic side-looking SAR experiments and the first bistatic forward-looking SAR experiment in the world that used two aircraft. Six chapters cover imaging theory, imaging algorithms, parameter estimation, motion compensation, synchronization and experimental verification. The book describes physical concepts simply and clearly and provides concise mathematical derivations. - Presents comprehensive theory and methods for bistatic SAR, including the design of experimental systems and verification - Considers different configurations, including translational variant bistatic SAR and bistatic forward-looking SAR - Gives insights based on a world-leading research program into bistatic SAR, including practical tips on theory and method - Covers novel experiments, including the first bistatic forward-looking SAR experiment using two aircraft - Offers researchers clear descriptions of physical concepts and concise mathematical derivations to help master bistatic SAR
Book Synopsis Motion Compensation of Inverse Synthetic Aperture Radar Images by : Michael Lee Fraser
Download or read book Motion Compensation of Inverse Synthetic Aperture Radar Images written by Michael Lee Fraser and published by . This book was released on 1988 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Principles of Synthetic Aperture Radar Imaging by : Kun-Shan Chen
Download or read book Principles of Synthetic Aperture Radar Imaging written by Kun-Shan Chen and published by CRC Press. This book was released on 2016-01-05 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Synthetic Aperture Radar Imaging: A System Simulation Approach demonstrates the use of image simulation for SAR. It covers the various applications of SAR (including feature extraction, target classification, and change detection), provides a complete understanding of SAR principles, and illustrates the complete chain of a SAR operati
Book Synopsis Synthetic Aperture Radar by : John J. Kovaly
Download or read book Synthetic Aperture Radar written by John J. Kovaly and published by Artech House Publishers. This book was released on 1976 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Motion Compensation of Stripmap SAR Image Based on Maximum Standard Deviation by :
Download or read book Motion Compensation of Stripmap SAR Image Based on Maximum Standard Deviation written by and published by . This book was released on 2005 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic aperture radars (SAR) are extensively used for military and civilian applications. Compared to real aperture radar, SAR systems synthesize a long antenna by means of a moving carrier (e.g . aircraft) in order to obtain high resolution SAR images. SAR systems have the advantage of long-range propagation of signals and modern complex information processing capability to provide high resolution imagery. In this thesis, a Step-by-Step Search Algorithm is proposed for estimating the non-linear motion components (range error and azimuth error) using the maximum standard deviation criteria. Block Based Signal Processing is done on every pixel so as to compensate for motion error at every pixel at the center of the block. Thus the solution is aimed at estimating the unknown motion error components (without assuming the distribution of the error components) at block center thus increasing the sharpness of the image. Motion Compensation for known error and unknown error are performed with identical simulation parameters. Simulations are limited to two dimensional SAR system by combining range and altitude to slant range, but the concepts can also be extended to three dimensional systems. (Abstract shortened by UMI.).
Book Synopsis Motion Compensation of Interferometric Synthetic Aperture Radar by : David P. Duncan
Download or read book Motion Compensation of Interferometric Synthetic Aperture Radar written by David P. Duncan and published by . This book was released on 2004 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attitude variations cause a Doppler shift and are corrected by limiting the processed azimuth bandwidth or by reversing the frequency shift with a range-dependent filter. Another important area considered is the effects of motion compensation on interferometry. When performing interferometry with YINSAR, motion compensating both channels to a single track has two effects. First, the applied MOCO phase corrections remove the "flat-earth" differential phase from the interferogram. Second, range resampling coregisters the two images. All of these changes have helped to improve YINSAR imagery.
Book Synopsis The Millimeter Wave Synthetic Aperture Radar Technology by : Hui Wang
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:
Book Synopsis Motion Compensation for Near-Range Synthetic Aperture Radar Applications by : Huaming Wu
Download or read book Motion Compensation for Near-Range Synthetic Aperture Radar Applications written by Huaming Wu and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Autofocus Motion Compensation for Synthetic Aperture Radar and Its Compatibility with Strapdown Inertial Navigation Sensors on Highly Maneuverable Aircraft by :
Download or read book Autofocus Motion Compensation for Synthetic Aperture Radar and Its Compatibility with Strapdown Inertial Navigation Sensors on Highly Maneuverable Aircraft written by and published by . This book was released on 1984 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigated the feasibility of using state-of-the-art strapdown inertial navigation systems to motion compensate synthetic aperture radar aboard highly maneuverable aircraft. The applicable equations were first derived to obtain a comparison between inertial navigation system capabilities and synthetic aperture radar motion compensation requirements. Both turned gyro and laser gyro systems were investigated to determine the applicability for the task. The autofocus motion compensation technique was studied to determine if its range and squint angle boundaries could be improved by the use of highly accurate strap-down inertial navigation system measurements. It was determined that state-of-the-art strapdown inertial systems have the capability to motion compensate synthetic aperture radars in maneuvering aircraft and can improve the range and squint angle boundaries using the autofocus motion compensation technique. The results illustrate the ability of tactical aircraft to obtain high resolution imagery, as well as navigation and target information, while maintaining the low life-cycle cost of strapdown technology.
Book Synopsis Robust Methods for the Motion Compensation of Inverse Synthetic Aperture Radar Imagery by : Benjamin Carrasco Flores
Download or read book Robust Methods for the Motion Compensation of Inverse Synthetic Aperture Radar Imagery written by Benjamin Carrasco Flores and published by . This book was released on 1990 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Charles V. J. Jakowatz Publisher :Springer Science & Business Media ISBN 13 :1461313333 Total Pages :431 pages Book Rating :4.4/5 (613 download)
Book Synopsis Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach by : Charles V. J. Jakowatz
Download or read book Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach written by Charles V. J. Jakowatz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern airborne and spaceborne imaging radars, known as synthetic aperture radars (SARs), are capable of producing high-quality pictures of the earth's surface while avoiding some of the shortcomings of certain other forms of remote imaging systems. Primarily, radar overcomes the nighttime limitations of optical cameras, and the cloud- cover limitations of both optical and infrared imagers. In addition, because imaging radars use a form of coherent illumination, they can be used in certain special modes such as interferometry, to produce some unique derivative image products that incoherent systems cannot. One such product is a highly accurate digital terrain elevation map (DTEM). The most recent (ca. 1980) version of imaging radar, known as spotlight-mode SAR, can produce imagery with spatial resolution that begins to approach that of remote optical imagers. For all of these reasons, synthetic aperture radar imaging is rapidly becoming a key technology in the world of modern remote sensing. Much of the basic `workings' of synthetic aperture radars is rooted in the concepts of signal processing. Starting with that premise, this book explores in depth the fundamental principles upon which the spotlight mode of SAR imaging is constructed, using almost exclusively the language, concepts, and major building blocks of signal processing. Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach is intended for a variety of audiences. Engineers and scientists working in the field of remote sensing but who do not have experience with SAR imaging will find an easy entrance into what can seem at times a very complicated subject. Experienced radar engineers will find that the book describes several modern areas of SAR processing that they might not have explored previously, e.g. interferometric SAR for change detection and terrain elevation mapping, or modern non-parametric approaches to SAR autofocus. Senior undergraduates (primarily in electrical engineering) who have had courses in digital signal and image processing, but who have had no exposure to SAR could find the book useful in a one-semester course as a reference.
Book Synopsis Motion Compensation of Inverse Synthetic Aperture Radar Images Using the Phase Method and Polar Reformatting by : Leslie Anne Keller
Download or read book Motion Compensation of Inverse Synthetic Aperture Radar Images Using the Phase Method and Polar Reformatting written by Leslie Anne Keller and published by . This book was released on 1989 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
