Statistics of the Stokes parameters and of the complex coherence parameters in one-look and multilook speckle fields

Touzi R.; Lopes A.

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Statistics of the Stokes parameters and of the complex coherence parameters in one-look and multilook speckle fields

机译：一视和多视散斑场中Stokes参数和复杂相干参数的统计

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Barakat [1987] derived the Stokes parameter statistics, applicable to one-look synthetic aperture radar (SAR) images, of a partially polarized wave backscattered from a Gaussian area. In this paper, the statistics of the Stokes parameters and of the phase difference are derived as a function of the mean effective phase difference and the degree of coherence for one-look and multilook SAR data. The statistics of the degree of coherence are also derived for multilook SAR data. It is shown that the estimator currently used for calculation of the degree of coherence is biased under low coherence conditions.

机译：Barakat [1987]推导了从高斯区域反向散射的部分极化波的斯托克斯参数统计量，该统计量适用于单视合成孔径雷达（SAR）图像。在本文中，斯托克斯参数和相位差的统计量是根据单视和多视SAR数据的平均有效相位差和相干程度得出的。还为多视SAR数据导出了相干程度的统计信息。结果表明，当前用于计算相干度的估计器在低相干条件下存在偏差。

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《IEEE Transactions on Geoscience and Remote Sensing》 |1996年第2期|P.519-531|共13页
作者
Touzi R.; Lopes A.;
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正文语种 eng
中图分类无线电电子学、电信技术;
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Statistics of the Stokes parameters and of the complex coherence parameters in one-look and multilook speckle fields

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