Hybrid Phased-MIMO Radar: A Novel Approach With Optimal Performance Under Electronic Countermeasures

Abstract

This letter presents a novel technique for optimizing the performance of a phased-MIMO radar in presence of strong jamming effects. The proposed technique not only overcomes the noise jamming but also counters the effects of deception jamming. Two orthogonal waveforms beam-formed by coherent operation of two sub-arrays are used to leverage the advantages of both MIMO and phased-radar simultaneously. The heart of the idea lies with its coherent receive operation where matched filtering and Karhunen-Loève Transform is applied for separating the signals. We make use of MUSIC algorithm for angle estimation; thereafter signal to noise plus jamming ratio is maximized by solving a convex optimization problem. The output shows remarkable results with an excellent peak to side-lobe ratio of more than 40 dB.