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19 May 2005 An iterative method for SAR moving target detection and geolocation for staring radar applications
Thomas L. Lewis, LeRoy Gorham, Atindra K. Mitra, Arnab Kumar Shaw
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Proceedings Volume 5808, Algorithms for Synthetic Aperture Radar Imagery XII; (2005) https://doi.org/10.1117/12.604683
Event: Defense and Security, 2005, Orlando, Florida, United States
Abstract
Our proposed research is to focus and geolocate moving targets in synthetic aperture radar imagery. The first step is to estimate the target cross-range velocity using sequential sub-apertures; this is done by forming low resolution images and estimating position as a function of sub-aperture, thus yielding an estimate of the cross-range velocity. This cross-range estimate is then used to bound the search range for a bank of focusing filters. Determining the proper velocity that yields the best focused target defines an equation for the target velocity, however both components of the targets velocity can not be determined from a single equation. Therefore, a second image with a slightly different heading is needed to yield a second focusing velocity, and then having a system of two equations and two unknowns a solution can be obtained. Once the target velocity is known the proper position can be determined from the range velocity.
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Thomas L. Lewis, LeRoy Gorham, Atindra K. Mitra, and Arnab Kumar Shaw "An iterative method for SAR moving target detection and geolocation for staring radar applications", Proc. SPIE 5808, Algorithms for Synthetic Aperture Radar Imagery XII, (19 May 2005); https://doi.org/10.1117/12.604683
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KEYWORDS
Synthetic aperture radar
Target detection
Image processing
Radar
Doppler effect
Image filtering
Detection and tracking algorithms
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