ABSTRACT
This chapter focuses on coherent multiple-input and multiple-output (MIMO) radar systems with closely separated antennas, such that the angle of arrival of each scatterer in the illuminated scene is approximately the same for all phase centers. It traces an alternative strategy and push randomization of the transmit signal structure to obtain compressive measurements at the stretch processor output. Using these estimates, the conditions required for successful support recovery as well as RIP conditions for order K to hold is detected. The chapter characterizes the performance of the MIMO system for support recovery using the receiver operating characteristics for successful support recovery. For recovery, a fine grid at a resolution four times that of a Nyquist grid and use the iteratively reweighted Gao1 method that minimizes a nonconvex objective function is used that approximates a Gao0 norm. The recovery guarantees for the proposed compressive illumination scheme are comparable to those of random Toeplitz matrices with a larger number of random elements.
