Intensity and phase statistics of multi-look polarimetric SAR imagery

Author

Lee, J.S. ; Hoppel, K. ; Mango, S.A. ; Miller, A.R.

Author_Institution

Remote Sensing Div., Naval Res. Lab., Washington, DC, USA

fYear

1993

fDate

18-21 Aug 1993

Firstpage

813

Abstract

Polarimetric SAR data are frequently multi-look processed. The statistical characteristics of multi-look data are quite different from that of single-look data. In this paper, the authors investigate the distributions of intensity and phase. In particular, the probability density function (PDF) of the multi-look phase difference between co-polarized components is derived for the first time, and expressed in closed form. The PDF is found only depending on the complex correlation coefficient and the number of looks. Also included are PDFs of multi-look intensity and amplitude ratios. These PDFs are verified with NASA/JPL AIRSAR data. The results of this paper can also be applied to the interferometric radar for studying the decorrelation effects

Keywords

geophysical techniques; geophysics computing; polarimetry; remote sensing; remote sensing by radar; synthetic aperture radar; PDF; co-polarized; complex correlation coefficient; geophysical measurement technique; intensity; land surface; multi-look polarimetric SAR imagery; phase difference; phase statistics; probability density function; radar remote sensing; signal processing; terrain mapping; Azimuth; Covariance matrix; Histograms; Probability; Radar polarimetry; Radar scattering; Speckle; Statistical distributions; Statistics; Symmetric matrices;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322213

Filename

322213