Doubly adaptive bistatic clutter filtering

Bistatic aerospace radar systems offer certain operational advantages over their monostatic counterparts. However, bistatic radar must contend with spectrally severe ground clutter returns. Effective adaptive filtering is necessary to improve detection performance, but the non-stationary nature of bistatic clutter degrades performance. As a result, bistatic STAP techniques must incorporate modifications accommodating the unique aspects of the clutter returns. This paper introduces a new bistatic STAP technique based on a doubly adaptive process. The method offers substantial improvement over traditionally applied STAP methods. We also compare this method against some other recently proposed bistatic STAP approaches.