Computationally Efficient Joint-Domain Clutter Cancellation for Waveform-Agile Radar

Waveform agility provides greater design freedom through the generation of a coherent processing interval (CPI) of nonrepeating waveforms. However, doing so introduces coupling of the range and slow-time Doppler dimensions that hinders clutter cancellation if not addressed. Non-identical multiple pulse compression (NIMPC) is a joint-domain approach that solves this problem, though the high dimensionality incurs a prohibitive computational cost. Inspired by recent work that exploits the Toeplitz structure of NIMPC, here we take that notion even further, demonstrating the processing of measured data at a cost significantly lower than direct NIMPC application.