This paper studied the use of novel waveforms, adaptive RF transmit and STAP receive compensation techniques to overcome the limitations to MEO space-based radar GMTI detection, caused by both clutter range ambiguities enhanced by the earth's rotation, and antenna mechanical distortions. Both very large phased array and cylindrical reflector antennas were considered and it was demonstrated that the deleterious effects of these phenomena were greatly mitigated by the use of quadratic phase modulation waveforms, adaptive RF subarray phase shift compensation and STAP true target steering vector correction. Subsequent research investigated RF column phase shift corrections on distorted reflectors in conjunction with QPMW and STAP that resulted in a 2-3:1 improvement in GMTI MDV and NDBZW detection.
Waveform Diversity and Adaptive Signal Processing to Improve SBR GMTI Performance Degraded by MEO Antenna Mechanical Distortions, Page 1 of 2
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