Chirp Scaling SAR成象算法及其實(shí)現(xiàn)
CHIRP SCALING SAR IMAGING ALGORITHM AND ITS IMPLEMENTATION
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摘要: 本文完善了Chirp Scaling(CS)SAR成象算法的數(shù)學(xué)模型,獲得了雷達(dá)點(diǎn)目標(biāo)二維頻域的精確解析式,并進(jìn)一步得到該算法存在的殘余相差。通過分析CS算法的特點(diǎn),提出實(shí)現(xiàn)該算法的一種硬件結(jié)構(gòu)。
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關(guān)鍵詞:
- CS算法; 殘余相差; 硬件實(shí)現(xiàn)
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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