Parallel Processing of Satellite-Borne SAR Data for Accurate and Efficient Image Formation
Conference: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
06/07/2010 - 06/10/2010 at Aachen, Germany
Proceedings: EUSAR 2010
Pages: 4Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
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.