关键词: SAR, 成像算法, 机载, 斜视, ETF

Abstract:

According to the airborne squint SAR (Synthetic Aperture Radar) imaging mode, the exact focusing function for arbitrary scene position is evoluted in details and then an improved fast ETF(Exact Transfer Function) algorithm is further proposed in this paper. Because the evolution is based on exact motion model and exact reference range model, as well as precise computing instead of approximate truncation for azimuth phase preservation, the algorithm performs distinguished phase precision.

Key words: synthetic , aperture , radar(SAR),  , imaging , algorithm,  , airborne,  , squint , mode,  , exact , transfer , function(ETF)