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A New Factorized Backprojection Algorithm for Stripmap Synthetic Aperture Radar
Microwave Earth Remote Sensing Laboratory, Brigham Young University, Provo, USA
Microwave Earth Remote Sensing Laboratory, Brigham Young University, Provo, USA
- 1 Microwave Earth Remote Sensing Laboratory, Brigham Young University, Provo, USA
- 2 Microwave Earth Remote Sensing Laboratory, Brigham Young University, Provo, USA
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Abstract
Factorized backprojection is a processing algorithm for reconstructing images from data collected by synthetic aperture radar (SAR) systems. Factorized backprojection requires less computation than conventional time-domain backprojec tion with minimal loss in accuracy for straight-line motion. However, its implementation is not as straightforward as direct backprojection. This paper provides a new, easily parallelizable formulation of factorized backprojection de signed for stripmap SAR data that includes a method of implementing an azimuth window as part of the factorized backprojection algorithm. We compare the performance of windowed factorized backprojection to direct backprojection for simulated and actual SAR data .
KeywordsBackprojectionWindowsSynthetic Aperture Radar (SAR)
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