Detection Performance of MIMO Radar with Un-Known Parameters

Multiple-input multiple-output radar uses multiple antennas at both the transmitter and receiver to improve the detection performance. In this paper, the problem of target detection with unknown parameters is considered for MIMO radars. We derive the close-form of the probability of detection and the probability of false alarm for the MIMO radar system with unknown parameters in totally correlated target echo signals case and arbitrary correlated target echo signals case, respectively. Performance of these detectors has been evaluated analytically. Simulation results show that in the totally uncorrelated target echo signals case, the detector has nothing to do with the transmission power, while in the arbitrarily correlated target echo signals case, the performance of the detector will be greatly influenced, the partial correlation between target echo signals will degrade the performance of any detector designed for completely correlated target echo signals or for independent target echo signals.