Parallel Processing of Satellite-Borne SAR Data for Accurate and Efficient Image Formation

Konferenz: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
07.06.2010 - 10.06.2010 in Aachen, Germany

Tagungsband: EUSAR 2010

Seiten: 4Sprache: EnglischTyp: PDF

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Bhattacharya, C. (Defence Institute of Advanced Technology, Pune 411025, India)

Image generation from satellite-borne synthetic aperture radar (SAR) video data requires numerical computations of the order of gigaflops (GFLOPs). Current parallel processing schemes distribute computation load among a number of parallel processing elements (PEs) for improving efficiency in computation. In this paper, we report a parallel signal processing algorithm for achieving very high efficiency in numerical computations of SAR image formation. We also demonstrate a two-dimensional memory mapping technique for range-cell migration correction (RCMC) that reduces substantially the number of memory call operations for re-indexing Doppler data. Sample SAR images from RADARSAT-1 video data are generated to validate accuracy and efficiency in image formation by parallel processing.