Fast-time STAP Performance in pre and post Range Processing Adaption as applied to Multichannel SAR

Hot-clutter cancellation using fast-time space time adaptive processing (STAP) can occur either pre or post range processing (RP) and to date, there has not been a direct comparison on which method offers the best results. This paper provides an analytic comparison which is verified with simulation and aims to provide insight into the location of the adaptive filter which would provide the best hot-clutter suppression. The covariance models are tested with signal models used in a multichannel synthetic aperture radar (SAR).