Space-time adaptive processing (STAP) for wide-band airborne radar

STAP is a technique used to reject clutter returns in airborne phased array radar systems. This paper presents an investigation of the performance of STAP in wideband scenarios. It is shown that, under these circumstances, narrowband STAP is often sufficient for clutter rejection with sideways looking arrays, but that a wideband STAP architecture is needed to reject mainlobe jamming and/or to achieve slow moving target detection with a forward looking array. The effect of time delay pre-steering on STAP performance is also examined.