Precision SAR processing using chirp scaling
作者： R.K. Raney , H. Runge , R. Bamler , I.G. Cumming , F.H. Wong
DOI: 10.1109/36.298008
关键词:
摘要: A space-variant interpolation is required to compensate for the migration of signal energy through range resolution cells when processing synthetic aperture radar (SAR) data, using either classical range/Doppler (R/D) algorithm or related frequency domain techniques. In general, requires significant computation time, and leads loss image quality, especially in complex image. The new chirp scaling avoids interpolation, yet performs cell correction accurately. only multiplies Fourier transforms implement, inherently phase preserving, suitable wide-swath, large-beamwidth, large-squint applications. This paper describes algorithm, summarizes simulation results, presents imagery processed with reviews quantitative measures its performance. Based on comparison, provides quality equal better than precision processor. Over parameters tested, results approach theoretical limit, as defined by system bandwidth. >
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