Dual-polarized MIMO radar

A radar system comprising:

• a transmit pipeline comprising a plurality of transmitters configured to transmit radio signals;
• and
• a receive pipeline comprising a plurality of receivers configured to receive radio signals that include (i) first radio signals transmitted by the plurality of transmitters and reflected from objects in an environment, and (ii) other radio signals that include second radio signals transmitted by at least one external transmitter distinct from the plurality of transmitters, wherein the second radio signals are unknown to the receive pipeline;
• wherein the receive pipeline comprises dual polarization receive channels configured to receive radio signals with corresponding polarizations, such that at least the first radio signals and the second radio signals are received with different respective polarizations;
• a signal analysis module configured to predict anticipated receive channel radio signals to be received based upon previously received receive channel radio signals, wherein the anticipated receive channel radio signals are defined at least in part by the previously received second radio signals, wherein the signal analysis module is configured to generate an interference prediction signal defined at least in part by the second radio signals, and wherein the signal analysis module is configured to perform correlation transforms comprising a fast Fourier transform combined with a Walsh-Fourier transform on the received receive channel radio signals to predict the anticipated receive channel radio signals to be received, and wherein correlation transforms and beamforming transforms are performed for each polarization;
• and
• a summing junction configured to subtract the interference prediction signal from the received radio signals to reduce interference from the second radio signals transmitted by the at least one external transmitter;
• wherein the receive pipeline is configured to provide interference immunity from the second radio signals transmitted by the at least one external transmitter, such that interference from the second radio signals transmitted by the least one external transmitter is mitigated based at least in part upon polarization differences and the interference prediction signal.