The effect of bandwidth on STAP

There has been much interest in multi-bin post-Doppler space-time adaptive-processing (STAP) algorithms, since they are perceived to perform better than their pre-Doppler counterparts. However, we show that when the effects of the radar´s bandwidth are taken into account this is not always true. Airborne radar systems of the future need to be capable of detecting small targets in the presence of interference. Interference may come from several sources; clutter from ground returns which form a ridge that is a function of bearing and Doppler frequency, deliberate electronic countermeasures and other accidental interference. In order to suppress the interference to the receiver noise floor STAP needs to be incorporated in such radar systems.