Let It GUWO: Waveform Optimization for Angular Blanking and Robustification in a MIMO Dual-Functional Radar-Communication System

Abstract

This paper considers two optimization problems for the conception of a co-located Multiple Input Multiple Output Dual-Functional Radar-Communication system. The first one consists in transmitting desired waveforms in a few specific directions, while minimizing the energy on other angular intervals. This enables to guarantee a certain discretion of the system. The second one examines the problem of synthesizing robust waveforms, so that their performance remain stable on the whole mainlobe (and not just on the sole direction of interest). The two problems involve the use of the Discrete Prolates Spheroidal Sequences, and are solved using gradient algorithms. The performance of the proposed methods are evaluated on simulations, by examining the radiated beampattern, as well as the quality of the waveforms.