Change Detection using SAR Data

The ability to identify and measure significant changes in target scattering and/or polarimetric parameters at known and co-located image locations provides a very powerful tool for large-area military and/or environmental monitoring applications. This paper describes the techniques developed by PCI to calculate a “change measurement” derived from co-registered polarimetric parameters. The detected changes are normalized to a percentile change map making it possible for trained operators to easily identify the areas of change. The following sections describe the developed procedure.