Adaptive ground clutter cancellation of slowly moving targets with the multi-channel airborne SAR

The detection of slowly moving targets and the estimation of their position and velocity are difficult problems for conventional airborne SAR systems with a single antenna, due to the spread of the clutter Doppler spectrum caused by the platform motion and the ambiguity between the cross motion and azimuth position. These problems can be solved via the use of multi-channel SAR and the space-time adaptive processing technique (STAP). In this paper, the clutter model and moving targets model suitable for airborne multi-channel SAR are presented and an efficient algorithm is proposed. Simulation results are illustrated, applying data produced by the proposed clutter model and moving targets model.