A Minimum Variance Distortionless Response Azimuth Estimation Algorithm of Acoustic Vector Array

doi:10.3969/j.issn.1000-1093.2019.01.018

Abstract

Abstract: In view of the minimum variance distortionless response (MVDR) algorithm of acoustic vector array, an improved acoustic vector array MVDR azimuth estimation method (IAVAMVDR) is proposed in consideration of the angle resolution and the single side pointing characteristic. The MVDR characteristics of traditional acoustic vector array are analyzed from two aspects of space power and subspace decomposition. The two covariance matrix construction methods are introduced by using the analytic velocity structure and the acoustic pressure-vibration velocity to suppress isotropic noise. On this basis, the target azimuth estimation is realized. The theoretical analysis shows that IAVAMVDR algorithm is used to effectively reduce the influence of signal subspace, making the main lobe narrower and the side lobe lower, and has ability of suppressing left-right ambiguity. The simulated and measured data prove the effectiveness of the proposed algorithm. Key

Key words: acousticvectorarray, minimumvariancedistortionlessresponse, left-rightambiguity, subspace

CLC Number:

TJ67

MA Bole, ZHU Shiqiang, SUN Guiqing. A Minimum Variance Distortionless Response Azimuth Estimation Algorithm of Acoustic Vector Array[J]. Acta Armamentarii, 2019, 40(1): 153-158.

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第40卷第1期
2019 年1月兵工学报ACTA
ARMAMENTARIIVol.40No.1Jan.2019

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