矢量阵相干宽带MVDR聚焦波束形成  

Coherent Broadband MVDR Focused Beamforming Based on Vector Sensor Array Processing

作　　者：时洁 杨德森 

机构地区：[1]哈尔滨工程大学水声技术国家级重点实验室,哈尔滨150001

出　　处：《系统仿真学报》2010年第2期473-477,共5页Journal of System Simulation

基　　金：国防基础研究项目(B0820060400);国家国防预研项目(51310080202);国家自然科学基金(40827003)

摘　　要：研究了两种矢量阵相干宽带MVDR聚焦波束形成方法:CSS-MVDR聚焦算法和STMV聚焦算法。两种方法将相干宽带MVDR高分辨方位估计方法及矢量阵信号处理技术与聚焦波束形成相融合,较常规聚焦波束形成具有更高的分辨力和更低的旁瓣级,能解决"左右舷模糊"问题并提高处理增益,可有效提高辐射噪声源近场定位识别效果。两种方法均可直接处理相干宽带信号,对于实际水声信号具有更高的适用性,具有较高的工程应用价值。通过仿真研究验证了相干宽带聚焦算法具有优越的空间分辨能力。Two new methods of coherent broadband MVDR focused beamforming based on vector sensor array processing were proposed. It can be utilized to locate the radiated noise sources in near field by combining vector sensor array processing with the coherent broadband MVDR high resolution bearing estimation method. Compared with conventional method, the proposed methods have higher resolution and lower side-lobe level, and have the capability of judging the port and starboard. This method can also process the coherent broadband signals directly. Performance comparison of the proposed methods with conventional method was provided.

关 键 词：矢量阵 相干宽带声源 MVDR 聚焦波束形成 

分 类 号：TB556[理学—物理]