A Pre-Doppler Approach for Reduced Loss Bistatic STAP

In this paper we investigate the effects of bistatic clutter spectral dispersion on STAP techniques. The use of reduced d.o.f. algorithms is considered since they enable localized training in the range dimension and thus limited effects of clutter non-stationarity. To this aim, the selection of appropriate adaptive degrees of freedom is demonstrated to be a crucial issue. Due to their intrinsic capability to yield reduced adaptivity loss and to their limited computational load, Pre-Doppler STAP techniques are shown to be a very appealing solution for clutter cancellation and slowly moving target detection in bistatic radar systems.