An airborne radar sensor operating in Ground Moving Target Indicator (GMTI) mode is able to distinguish between airborne targets and ground moving targets. Further it is possible to separate stationary from moving ground targets. For military radar applications, it is desirable that the GMTI mode be extended to allow classification of detected ground targets. In addition, such an extension should permit classification of Helicopters. A model-based classification algorithm suitable for GMTI processing as well as for Doppler signal evaluation is presented, using only signals in the exo-clutter region (clutter-free region of the range-Doppler domain) and not requiring STAP-processing.
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