Two-dimensional pulse-to-pulse canceller applied in multiple-input-multiple-output radar

Since the spectrum of the ground clutter in the ground-based pulse radar is spatially-temporally decoupled, a simple pulse-to-pulse canceller is often used as a moving target indication filter for suppressing the ground clutter near the zero-Doppler frequency. In contrast, in the airborne phased-array radar, which is a typical single-input-multiple-output radar, the spectrum of the ground clutter is spatially-temporally coupled each other, and the two-dimensional pulse-to-pulse canceller (TDPC) for ground clutter cancellation has been developed by using the ground clutter model in the spatial-temporal domain. Based on the ground clutter model of multiple-input-multiple-output (MIMO) radar, the authors can extend the existing TDPC to more general form that can suppress the ground clutter in the MIMO radar. As the MIMO TDPC can be calculated offline by utilising the geometry knowledge of the ground clutter of MIMO radar, it can be used as an efficient and convenient ground clutter pre-filtering tool.