Range sidelobe control for LFMCW waveforms in OTHR with direct digital receivers

This paper has introduced a mismatched filtering technique for controlling the range sidelobe behavior in cyclic type waveforms such as LFMCW. We have derived and simulated the performance for mismatched filters with and without Doppler tolerance. Finally note that the approach introduced thus far is far from what may be considered optimal processing for small target detection since the SWNR losses are equally applicable to strong and weak targets. The optimum processing in this regard is delivered by the well-known CLEAN technique [5], [6], that induces minimal SWNR losses for weak targets. In a full paper to follow, we consider and compare all options discussed above applicable to strong target range sidelobe control in OTHR with periodic LFMCW (or any periodic CW) waveform in direct digital receiver systems.