Beampattern matching in colocated MIMO radar using transmit covariance matrix design

Abstract

The common problem in the multiple-input multiple-output (MIMO) radar is that the beampattern matching realized by the optimization-based algorithms would lead to high computational complexity. Using the presented transmit covariance matrix design (TCMD) algorithm, the efficiency of MIMO radar beampattern matching can be improved drastically. In this paper, the designed covariance matrix (CM) is constructed as an iterative form, and the appropriate power factor is designed in closed-form to realize accurate spatial power control and guarantee the positive semidefiniteness of the design CM. Moreover, the beampattern matching is realized by successively adjusting the spatial power at the directions where the specifications are not satisfied. Numerical results of accurate spatial power control and beampattern matching are carried out to show the effectiveness and efficiency of the presented TCMD algorithm.