Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 225 for “"synthetic aperture radar"”.
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Doppler-only synthetic aperture radar
SAR has traditionally been performed using high-range resolution data. This thesis is a proof-of-concept that the imaging process can be performed using high-doppler resolution data. The system requires a simple continuous wave transmitter, and the signal returns are confined to a narrow band. …
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Software simulation of synthetic aperture radar
The purpose of this report is to set out the results of the development of SAR simulation software. The aim of the thesis was to develop such software so that it provides the necessary functionality but is still flexible and simple to use. It addition it must be developed such that it may be …
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Array processing methods for calibrating Inverse Synthetic Aperture Radar and Multiple Pass Synthetic Aperture Radar / by Zhishun She.
Investigates calibration for errors of a synthetic aperture in Inverse Synthetic Aperture Radar and Multiple Pass Synthetic Aperture Radar. Both are reviewed as the problems of array processing and are solved from the point of array calibration.
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Synthetic Aperture Radar Imaging Simulated in MATLAB
… with the goal of generating images using synthetic aperture radar (SAR) simulations coded in MATLAB. The project is supervised by Dr. John Saghri and sponsored by Raytheon Space and Airborne Systems. SAR is a type of imaging radar in which the relative movement of the antenna with respect …
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Motion Compensation of Interferometric Synthetic Aperture Radar
… from a nominal, straight-line flight path of a synthetic aperture radar (SAR) lead to inaccurate and defocused radar images. This thesis is an investigation into the improvement of the motion compensation algorithm created for the BYU inteferometric synthetic aperture radar, YINSAR. The existing …
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Synthetic aperture radar image simulator for interferometry
An interferometric synthetic aperture radar (SAR) simulator was created for the purposes of experimenting with and demonstration of the interferometric process, mission planning and radar image interpretation. The simulation method employs image statistics and terrain geometry to form a synthetic …
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A spaceborne synthetic aperture radar data processor
… with the design and implementation of a Synthetic Aperture Radar (SAR) data processor. The implementation of the processing is based on a standard sequential approach to the problem and employs commonly used algorithms. The processing was done using the C language running on an IBM …
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Synthetic Aperture Radar Interferometry with 3 satellites
Our study investigates interferometric SAR (InSAR) post-processing height retrieval techniques. We explore the possible improvements by adding a third satellite to the two already in orbit, and examine some potential uses of this setup. As such, we investigate three methods for height retrieval and …
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Digital image processing of orbital synthetic aperture radar
Synthetic aperture radar (SAP) is gaining increasing importance in the field of remote sensing. The main feature of image data transmitted from orbital satellite synthetic aperture radar is all-weather performance, which explains its importance in many applications. Unfortunately SAP image data is …
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High Resolution Simulation of Synthetic Aperture Radar Imaging
… is to develop a more realistic simulation of Synthetic Aperture Radar (SAR) that has the ability to image detailed targets, and that can be used for Automatic Target Recognition (ATR). This thesis project is part of ongoing SAR ATR research at California Polytechnic State University (Cal Poly) …
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Three-Dimensional Target Modeling with Synthetic Aperture Radar
Conventional Synthetic Aperture Radar (SAR) offers high-resolution imaging of a target region in the range and cross-range dimensions along the ground plane. Little or no data is available in the range-altitude dimension, however, and target functions and models are limited to two-dimensional …
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Implementation of fast airborne synthetic aperture radar simulation
Synthetic Aperture Radar (SAR) is a powerful tool to map the topographic data of the Earth surface regardless of weather and optical illumination effects. Since nowadays the modem aircraft may be fitted with SAR facility, the aim of this dissertation is to develop fast algorithms for a fast or …
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Performance analysis for synthetic aperture radar target classification
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Data Logging System for a Synthetic Aperture Radar Unit
<p><em>A small, existing radar unit lacked the ability to automatically store the data it was receiving, which made its use clunky and cumbersome. A system was constructed to allow an on-board microprocessor to track distance traveled, and automatically store the data output from the radar unit to …
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Topics in Image-Formation Algorithms for Synthetic Aperture Radar
Finally, we investigate image formation for highly squinted SAR that arises in runway imaging from an approaching aircraft. We explore theoretical feasibility of the runway-imaging scenario. We apply two image-formation algorithms: our general-inversion algorithm and the $\omega-k$ algorithm. The …
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Range-doppler synthetic aperture radar processing at VHF frequencies
This thesis focuses on the application of range-Doppler processing at VHF frequencies for wide azimuth beam, airborne, stripmap SAR systems with zero Doppler centroid and modest pulse bandwidths relative to the carrier frequency (simulations less than 30 percent). Such a system is the South African …
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