星载SAR分布目标原始数据模拟研究
Distributed Targets Raw Data Simulation of Spaceborne SAR
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摘要: 该文提出了一种星载SAR分布目标原始数据模拟的方法。以Kirchhoff近似及小平面单元理论为基础，讨论并给出了组成分布目标基本单元的小平面后向散射系数的计算方法。接着介绍了分布目标的回波模型，具体阐述了分布目标的原始数据形成方法。通过对原始数据成像处理后得到的图像进行分析，验证了此方法的有效性。Abstract: A method of simulating distributed targets raw data of spaceborne SAR is given. Based on the theory of Kirchhoff approach and facet, the algorithm of computing the facets backscatter coefficients is discussed. Then the echo signal model of the distributed target consisted of facets is introduced. And the method and whole procedure of simulating distributed targets raw data are described. After the analysis of the compressed image of raw data simulated, the conclusion can be reached that the method of simulating raw data of distributed target is right.
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