Complex Wishart distribution based analysis of polarimetric synthetic aperture radar data  Allan Aasbjerg Nielsen, Henning Skriver, Knut Conradsen
 Abstract  Multilook, polarimetric synthetic aperture radar (SAR) data are often worked with in the socalled covariance matrix representation. For each pixel this representation gives a 3x3 Hermitian, positive definite matrix which follows a complex Wishart distribution. Based on this distribution a test statistic for equality of two such matrices and an associated asymptotic probability for obtaining a smaller value of the test statistic are given and applied to change detection, edge detection and segmentation in polarimetric SAR data. In a case study EMISAR Lband data from 17 April 1998 and 20 May 1998 covering agricultural fields near Foulum, Denmark, are used. Soon the Japanese ALOS, the German TerraSARX and the Canadian RADARSAT2 will acquire spaceborne, polarimetric data making analysis based on these methods important.  Type  Conference paper [With referee]  Conference  Proceedings of MultiTemp 2007  Editors  G.J.M. De Lannoy, R. Hoeben, N.E.C. Verhoest, W.W. Verstraeten, S. Bruneel and P. Coppin  Year  2007 Month July  Electronic version(s)  [pdf]  BibTeX data  [bibtex]  IMM Group(s)  Image Analysis & Computer Graphics, Geoinformatics 
