SAR多视图像的Stokes参数的统计分布

刘涛; 王雪松; 肖顺平

doi:10.3724/SP.J.1146.2006.01446

SAR多视图像的Stokes参数的统计分布

doi: 10.3724/SP.J.1146.2006.01446

基金项目:

全国优秀博士论文专项资金(08100101)和新世纪优秀人才支持计划(NCET-04-0997)资助课题

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出版历程
- 收稿日期: 2006-09-26
- 修回日期: 2007-03-19
- 刊出日期: 2008-05-19

Statistics of the Stokes Parameters for Multilook SAR Image

摘要

摘要: 该文首先应用散射矩阵的Wishart 联合分布推导了高斯分布散射矩阵的Stokes参数分布，利用极化不变量思想得到了全部4个Stokes参数分布相当理想的理论结果，并与前人的结果进行了对比，体现了此分析算法的简洁性与统一性，他们可以具体描述Stokes参数的起伏性。在此基础上，求出了SAR多视情况下标准化Stokes参数分布的概率密度函数，从另一方面描述了SAR多视图像的随机状态特性，这些结果对于降低斑点噪声、地表分类与背景中的目标识别具有重要的指导意义。
- 合成孔径雷达;多视Stokes参数;概率密度函数;极化不变量
Abstract: In this paper, the statistics of the union Stokes parameters in Gaussian assumption is derived from the Whishart distribution, and through the polarization invariant the analytic expressions of the four Stokes parameters are presented. The results have a comparison with the conclusion derived before, which shows the presented expressions to be simple and exact. Then the statistical PDF(Probability Density Function) of the normalized Stokes parameters are showed ,which describes the variety of the polarization state in another way. All the above can be useful to speckle reduced, classification for terrain and target recognition in complex environments or other applications.

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