Multi-look, polarimetric synthetic aperture radar (SAR) data are often worked with in the so-called 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 L-band data from 17 April 1998 and 20 May 1998 covering agricultural fields near Foulum, Denmark, are used. Soon the Japanese ALOS, the German TerraSAR-X and the Canadian RADARSAT-2 will acquire space-borne, polarimetric data making analysis based on these methods important.
|Title of host publication||International Workshop on the Analysis of Multi-temporal Remote Sensing Images, 2007. MultiTemp 2007.|
|Publication status||Published - 2007|
|Event||MultiTemp2007 - Leuven, Belgium|
Duration: 1 Jan 2007 → …
|Period||01/01/2007 → …|