基于EMD的矢量水声器方位估计算法

A method of the azimuth angle estimation using vector hydrophone based on EMD

对经验模态分解算法(EMD算法)进行深入研究,对其基本原理、基本性质以及存在的问题进行分析。为改善EMD算法在方位估计的精度,减少高频噪声、间断干扰的影响,本文采用Hilbert-Huang变换方法来消除模态混叠现象。实验结果表明,本文提出的基于EMD的矢量水声器方位估计算法,能够有效提高方位估计的精度。

In this paper, the empirical mode decomposition method （EMD algorithm ） was conducted, the basic principles and the basic nature of problems the EMD was also analyzed. In order to improve the accuracy of the estimated position, reduce high-frequency noise and the impact of intermittent interference, we use the Hilbert-Huang transform method to eliminate aliasing modes. Experimental results show that the proposed method using vector hydrophone based EMD estimation algorithm can effectively improve the accuracy of the estimated position.