星載SAR分布目標(biāo)原始數(shù)據(jù)模擬研究
Distributed Targets Raw Data Simulation of Spaceborne SAR
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摘要: 該文提出了一種星載SAR分布目標(biāo)原始數(shù)據(jù)模擬的方法。以Kirchhoff近似及小平面單元理論為基礎(chǔ)，討論并給出了組成分布目標(biāo)基本單元的小平面后向散射系數(shù)的計算方法。接著介紹了分布目標(biāo)的回波模型，具體闡述了分布目標(biāo)的原始數(shù)據(jù)形成方法。通過對原始數(shù)據(jù)成像處理后得到的圖像進行分析，驗證了此方法的有效性。
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關(guān)鍵詞:
- 星載SAR; 分布目標(biāo); 原始數(shù)據(jù); 模擬; 小平面單元
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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