单个压差式矢量水听器MVDR波束形成的优化研究  

Optimization for MVDR beamforming based on single pressure gradient vector hydrophone

作　　者：王绪虎[1,2] 陈建峰[1] 韩晶[1] 金勇[3] 

机构地区：[1]西北工业大学航海学院,陕西西安710072 [2]曲阜师范大学物理工程学院,山东曲阜273165 [3]河南大学计算机与信息工程学院,河南开封475001

出　　处：《系统工程与电子技术》2014年第3期434-439,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(61001153);国家自然科学基金河南联合人才培养项目(U1204611);山东省高等学校科技计划项目(j09lg08)资助课题

摘　　要：从矢量水听器和声压阵两个角度,研究了单个二维压差式矢量水听器的最小方差无失真响应(minimum variance distortionless response,MVDR)波束形成的优化技术。针对压差式矢量水听器半径波长比大于0.1时,利用它进行方位估计性能恶化的问题,提出了一种修正的单个压差式矢量水听器MVDR波束形成处理方法。仿真和湖上试验的结果表明:修正的压差式矢量水听器MVDR处理方法对阵元间距的变化具有更好的稳健性;在半径波长比小于0.1时具有更好的估计性能,在半径波长比大于0.1的一定范围内依然具有良好的方位估计能力。The optimization technique of the minimum variance distortionless response （MVDR） beamform ing based on single two-dimension pressure gradient vector hydrophone is studied from the aspects of vector hy drophone and pressure sensors array. When the radius to wavelength ratio is more than 0.1, the direction of ar rival （DO.A） estimation performance of the pressure gradient hydrophone becomes worse. For improving this, a modified MVDR beamforming approach based on single pressure gradient vector hydrophone （MVMVDR） is proposed. The simulation and lake trial results indicate the MVMVDR approach has better robustness to the variation of the radius; it has better DOA estimation performance than original approaches when the radius to wave length ratio is equal or lesser than 0.1, and it is still valid when the radius to wavelength ratio is more than 0.1.

关 键 词：信息处理技术 压差式矢量水听器 波束形成 最小方差无失真响应 

分 类 号：TN911.7[电子电信—通信与信息系统]