单矢量水听器的姿态修正测向问题探讨  

Direction of Arrival Estimation from a Single Vector Hydrophone with Attitude Correction

作　　者：牛嗣亮[1] 张振宇[1] 胡永明[1] 倪明[1] 

机构地区：[1]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2011年第6期105-110,共6页Journal of National University of Defense Technology

基　　金：国家863高技术资助项目(2006AA09Z121)

摘　　要：提出了一种采用姿态修正的单矢量水听器远场测向方法。在实际应用中,矢量水听器的测向及其接收的质点振速分量信噪比(SNR)均会受到水听器偏转姿态的影响。为此,利用远场条件下只需两个振速分量和声压信息即可实现二维测向的原理,提出了一种基于振速分量选择处理的远场测向方法,该方法充分利用高SNR的振速分量,提高了测向精度。计算机仿真和光纤矢量水听器海上试验结果初步验证了该方法的有效性和可行性。A far-field Direction-of-Arrival（DOA） estimation algorithm with attitude correction based on a single vector hydrophone was proposed.In practical application,both the direction finding and the signal-to-noise ratios（SNR） of three components in the acoustic particle velocity vector suffered from the attitude deflection of a vector hydrophone.Two components of a particle velocity vector combined with pressure signal could be used to estimate the two-dimensional bearing of a far-field target.Therefore,a far-field DOA estimation algorithm based on two properly chosen velocity components with attitude correction was proposed to increase the DOA estimation accuracies.Both the experiment data and numerical simulations were used to verify the feasibility and validity of the method.

关 键 词：矢量水听器 姿态修正 方位估计 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]