声矢量阵双四元数模型及波束域DOA估计算法  

Biquaternion Model of Vector Hydrophone Arrayand DOA Estimation in Beam Space

作　　者：何光进 游修东[2] 

机构地区：[1]海军驻昆明地区军事代表办事处 [2]91388部队

出　　处：《舰船电子工程》2015年第10期148-150,共3页Ship Electronic Engineering

摘　　要：针对传统的矢量水听器阵数据处理方法将水听器的输出用一复值的长矢量来表示,没有充分利用矢量水听器各振速通道的正交关系,提出了用双四元数对矢量水听器的输出数据建模,既保留了矢量水听器各通道间的正交性,又增强了对相关噪声的抑制能力。在此基础上,推导了波束域的双四元数方位估计算法,减少了算法的运算量,提高了算法在低信噪比下的分辨能力。通过仿真实验证明了算法的有效性。In the traditional vector data processing methods,the output of vector hydrophone array is expressed as a complex column vector,which cannot hold the orthogonality of the inside structure.Here,biquaternion algebra is employed to model the output of a vector hydrophone,which holds the orthogonality of the inside structure and is robust to coherent noises.What＇s more,in order to cut down the computational complexity and improve resolution power,biquaternion based DOA algorithm of beam space is introduced.Simulations and comparisons are given at the end,which verify the efficiency of the algorithm.

关 键 词：水声 声矢量阵 双四元数 DOA 波束域 MUSIC 

分 类 号：TB566[交通运输工程—水声工程]