Research on Multi-Target Detection Performance of Typical Two-Level Nested Linear Array Sonar Based on Simulation

Aiming at the typical environment of underwater multi-target DOA estimation, the performance of a typical two-level nested linear array DOA estimation method is studied. Firstly, the far-field multi-target received data model of typical two-level nested linear array sonar is given; Secondly, combined with the classical MUSIC beamforming technology, the basic principle of the typical two-level nested linear array DOA estimation algorithm is given; Finally, combined with the typical multi-target underwater acoustic detection environment, computer simulation experiments are carried out, focusing on the performance of the algorithm under different SNRs and underdetermined conditions.