Chirp Scaling SAR成象算法及其实现
CHIRP SCALING SAR IMAGING ALGORITHM AND ITS IMPLEMENTATION
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摘要: 本文完善了Chirp Scaling(CS)SAR成象算法的数学模型,获得了雷达点目标二维频域的精确解析式,并进一步得到该算法存在的残余相差。通过分析CS算法的特点,提出实现该算法的一种硬件结构。
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关键词:
- CS算法; 残余相差; 硬件实现
Abstract: This paper improves the model of Chirp Scaling (CS) SAR imaging algorithm. Based on the theoretical analysis, the exact formulation of point target in two-dimensional frequency domain and the phase error are obtained. According to the characteristics of the CS algorithm, a hardware architecture to realize its realtime imaging processing is provided. -
Jin Y. Wu Cbialin. IEEE Trans. on GRS, 1989, GRS-22(6):592-597.[2]Cafforio C, Prati C, Rocca F. IEEE Trans. on AES, 1991, AES-27(2):194-206.[3]Raney R K. Int[J].J. Remote Sensing.1992,13:991-998[4]Runge H, Bamler R. A Novel High Precision SAR focusing Aglorithm Based on Chirp Sc-aling. Proc. IGARSS92, Houston: 1992,372-375. -
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