CHANGE DETECTION IN A SHORT TIME SEQUENCE OF POLARIMETRIC C-BAND SAR DATA

摘要

Based on an omnibus likelihood ratio test statistic for theequality of several variance-covariance matrices following thecomplex Wishart distribution and a factorization of this teststatistic with associated p-values, change analysis in a timeseries of multilook, polarimetric SAR data in the covariancematrix representation is carried out. The omnibus test statisticand its factorization detect if and when change(s) occur. Thetechnique is demonstrated on airborne EMISAR C-band databut may be applied to ALOS, COSMO-SkyMed, RadarSat-2Sentinel-1, TerraSAR-X, and Yaogan data also.