Multiresolution GMTI radar

The detection and tracking of ground moving vehicles from airborne radar can be challenging at slow target velocities due to the close space-time (angle-Doppler) proximity of strong competing mainbeam clutter. Moreover, in complex non-stationary clutter environments, conventional space-time adaptive processing (STAP) cannot be relied upon to provide precision ing. In this paper, we re-examine GMTI radar from a multiresolution perspective resulting in a hybrid radar mode combining elements of synthetic aperture radar (SAR) with STAP GMTI. In particular, acute sources of clutter interference are resolved via quasi-SAR processing, and then combined with STAP GMTI to significantly reduce minimum detectable velocities, reduce the required DOFs, increase available training set size, and lower SINR loss and false alarms.