Robust Design of Transmit Waveform and Receive Filter For Colocated MIMO Radar

TL;DR

This paper proposes a robust joint transmit waveform and receive filter design for colocated MIMO radar that maximizes worst-case SINR under signal-dependent interference, using SDP and cyclic optimization.

Contribution

It introduces a novel optimization framework combining rank-one relaxation and SDP for robust MIMO radar waveform and filter design.

Findings

The proposed method effectively enhances SINR in numerical simulations.

The cyclic optimization algorithm converges reliably to a good solution.

The approach handles unknown target angles and interference robustly.

Abstract

We consider the problem of angle-robust joint transmit waveform and receive filter design for colocated Multiple-Input Multiple-Output (MIMO) radar, in the presence of signal-dependent interferences. The design problem is cast as a max-min optimization problem to maximize the worst-case output signal-to-interference-plus-noise-ratio (SINR) with respect to the unknown angle of the target of interest. Based on rank-one relaxation and semi-definite programming (SDP) representation of a nonnegative trigonometric polynomial, a cyclic optimization algorithm is proposed to tackle this problem. The effectiveness of the proposed method is illustrated via numerical examples.