Frequency Diverse Array Beampattern Synthesis with Joint Optimization of Frequency Offset and Carrier

A basic frequency diverse array(FDA) using linearly increasing frequency offset produces an S-shaped range-angle coupled beampattern, which is limited to apply to radar detection. In this paper, a novel FDA with nonlinear frequency offset and nonlinear multicarrier which are optimized by the Mayfly Algorithm(MA) is proposed. Simulation results demonstrate that, compared with two other dot-shaped beampattern synthesis for FDA, the proposed method has made great improvements in spatial focusing and sidelobe suppression.