Research on an Improved Beam-forming Algorithm

Detecting underwater object and recognizing the location of the signal source is an important task in underwater acoustic engineering. To realize this function, beam-forming algorithm is needed for processing of back-end acoustic signal. MVDR algorithm, which is commonly used in engineering, has narrow main lobe in power spectrum and strong multi-target resolution, yet a high sensitivity. In order to solve this problem, an improved convex optimization algorithm based on MVDR is proposed to optimize its steering vector. Simulation results show that the improved algorithm is more robust and can effectively improve the performance of beam-forming settlement method for target direction of arrival (DOA) estimation.