Enhanced Angular Resolution and Ambiguity Suppression for MIMO Radar Systems by Compressed Sensing Techniques

In general, coherent multiple-input multiple-output (MIMO) radar systems with co-located antennas, form monostatic virtual arrays by discrete convolution of bistatic setups of transmitters and receivers. Thereby, a trade-off between maximum array dimension, element spacing and hardware efforts exists. Compressed sensing techniques can help to improve resolution or to suppress angular ambiguities for a given hardware expense. This paper demonstrates the application of a compressed sensing technique on an existing MIMO radar operating in lower W-band. Theoretical results improving the azimuth resolution and the suppression of azimuth ambiguities are presented.