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

Author

Touzi, Ridha ; Lopes, Armand

Author_Institution

Canada Centre for Remote Sensing, Ottawa, Ont., Canada

Volume

34

Issue

2

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

519

Lastpage

531

Abstract

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

Keywords

coherence; parameter estimation; radar imaging; radiowave interferometry; remote sensing by radar; speckle; statistical analysis; synthetic aperture radar; Gaussian area; Stokes parameters; complex coherence parameters; degree of coherence; mean effective phase difference; multilook speckle fields; one-look speckle fields; partially polarized wave; phase difference; Adaptive optics; Biomedical optical imaging; Coherence; Optical interferometry; Optical scattering; Polarization; Speckle; Statistics; Stokes parameters; Synthetic aperture radar;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.485128

Filename

485128