Research on the near field sound source localization method for small snapshots

Qing Ji1, Jin Fang Cheng2

Department of Weaponry Engineering, Naval University of Engineering, Wuhan, China

1Corresponding author

E-mail: 1jiumingya886@163.com, 2jeffreychangcn@hotmail.com

Received 2 October 2017; accepted 8 October 2017

DOI https://doi.org/10.21595/vp.2017.19226

 

Abstract. The performance of standard MVDR algorithm would be decreased sharply when the sampled data is small. In this paper, vector MVDR algorithm and the diagonal loading are proposed to improve the robustness. Firstly, the sample date covariance matrix is whitened to obtain more uniform noise, and then use the standard deviation of covariance matrix as the loading amount to complete diagonal loading. Finally, the effectiveness and robustness of the proposed algorithm is verified by simulation. Simulation results reveal that it has higher positioning accuracy with small sample, with the increase of SNR and snapshots, the estimationís RMSE of target location decreases continuously.

Keywords: small snapshots, near field localization, diagonal loading, vector hydrophone, MVDR.

References

[1]        Zhang Chao Ran Research on Small Target Location Based on Vector Detection. Naval University of Engineering, Wuhan, 2016.

[2]        Yan She Feng, Ma Yuan Liang Sensor Array Beampattern Optimization: Theory with Applications. Science Press, 2009.

[3]        Capon J. High-resolution frequency-wavenumber spectrum analysis. Proceedings of the IEEE, Vol. 57, Issue 8, 2005, p. 1408‑1418.

[4]        Carlson B. D. Covariance matrix estimation errors and diagonal loading in adaptive arrays. IEEE Transactions on Aerospace and Electronic Systems, Vol. 24, Issue 4, 1988, p. 397‑401.

[5]        Li J., Stoica P., Wang Z. On robust Capon beamforming and diagonal loading. IEEE Transactions on Signal Processing, Vol. 51, Issue 7, 2003, p. 1702‑1715.

[6]        Ma N., Goh J. T. Efficient method to determine diagonal loading value. IEEE International Conference on Acoustics, Speech and Signal Processing, 2003.

Cite this article

Ji Qing, Cheng Jin Fang Research on the near field sound source localization method for small snapshots. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 288‑293.

 

© JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533