Simplified processing for time-staggered MIMO waveforms with interference reduction properties

A simplified radar processing scheme for multiple-input multiple-output (MIMO) radar is presented. The scheme uses a single matched filter to process all K waveforms in the MIMO waveform set however requires that K range gates are computed rather than a single range gate as in single waveform radar. The scheme assumes the MIMO waveform set is comprised of time-staggered waveforms and there are mild assumptions on the scatterer response that have been validated for the high frequency skywave radar case using an experimental MIMO skywave transmitter system. Results from this experimental system have shown that the simplified MIMO processing scheme described also has radio frequency interference rejection properties. An example from the experimental system demonstrates both ionospheric mode selection using MIMO radar and interference rejection.

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