Mismatched Filters for High-Velocity Target Detection in PMCW Radars

This paper is about the use and performance of mismatched filters (MMFs) in PMCW radars. We review and motivate their use and show how MMFs can be designed to provide excellent sidelobe levels and Doppler tolerance. Numerical simulations demonstrate sidelobe level reductions of up to 50 dB when compared to matched filtering (MF). However, a drawback is the loss in maximum range which introduces a major design trade-off to be considered. Furthermore, other methods such as fast-time Doppler compensation (FTDC) are competitive, but break down outside the unambiguous Doppler zone.