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分布式目標(biāo)的極化SAR距離模糊計算方法研究

洪文 楊士林 李洋 張晶晶 郭勝龍

洪文, 楊士林, 李洋, 張晶晶, 郭勝龍. 分布式目標(biāo)的極化SAR距離模糊計算方法研究[J]. 電子與信息學(xué)報, 2015, 37(6): 1437-1442. doi: 10.11999/JEIT141234
引用本文: 洪文, 楊士林, 李洋, 張晶晶, 郭勝龍. 分布式目標(biāo)的極化SAR距離模糊計算方法研究[J]. 電子與信息學(xué)報, 2015, 37(6): 1437-1442. doi: 10.11999/JEIT141234
Hong Wen, Yang Shi-lin, Li Yang, Zhang Jing-jing, Guo Sheng-long. Study on Polarimetric SAR Range Ambiguity Computation for Distributed Targets[J]. Journal of Electronics & Information Technology, 2015, 37(6): 1437-1442. doi: 10.11999/JEIT141234
Citation: Hong Wen, Yang Shi-lin, Li Yang, Zhang Jing-jing, Guo Sheng-long. Study on Polarimetric SAR Range Ambiguity Computation for Distributed Targets[J]. Journal of Electronics & Information Technology, 2015, 37(6): 1437-1442. doi: 10.11999/JEIT141234

分布式目標(biāo)的極化SAR距離模糊計算方法研究

doi: 10.11999/JEIT141234

Study on Polarimetric SAR Range Ambiguity Computation for Distributed Targets

  • 摘要: 該文提出了一種運(yùn)用協(xié)方差矩陣計算星載全極化SAR距離模糊的方法。首先分析了極化SAR距離模糊的成因及同極化和交叉極化通道間距離模糊能量的差異?,F(xiàn)有的距離模糊計算方法以散射矩陣為主,受相干斑影響,單一像素的散射強(qiáng)度不能表征分布目標(biāo)的反射率,因而在距離向相鄰的像素?zé)o法確定其距離模糊比。針對上述問題該文推導(dǎo)了基于分布目標(biāo)的極化SAR距離模糊的計算方法。結(jié)合Radarsat-2實(shí)測數(shù)據(jù)對這種新方法進(jìn)行了驗(yàn)證。實(shí)驗(yàn)表明,運(yùn)用協(xié)方差矩陣能夠很好地表征分布式目標(biāo),由它計算得出的距離模糊比是平穩(wěn)、確定的。相比已有算法,所提方法能夠有效計算極化SAR分布式目標(biāo)的距離模糊。
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出版歷程
  • 收稿日期:  2014-09-23
  • 修回日期:  2015-02-13
  • 刊出日期:  2015-06-19

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