Localization of Underwater Noise Sources based on Broadband MVDR  Focused Beamforming with Vector Sensor Array Processing

Two new methods of broadband MVDR focused beamforming are proposed in this paper. It can be utilized to locate the radiated noise sources in near field by combining vector sensor array processing with the MVDR-based high resolution bearing estimation method. Compared with the conventional technique, the proposed method has higher resolution, higher processing gain and lower side-lobe level, furthermore, has the capability of processing either coherent or non-coherrent broadband signals and judging the port and starboard. Performance comparison of the proposed method with conventional technique is also provided.