Passive Source Localization Using Compressively Sensed Towed Array

Authors

  • N. Suresh Kumar Naval Physical and Oceanographic Laboratory, Kochi
  • C. Bhattacharya Naval Physical and Oceanographic Laboratory, Kochi
  • A. Unnikrishnan Defence Institute of Advanced Technology, Pune

DOI:

https://doi.org/10.14429/dsj.63.5765

Keywords:

Compressive beamforming, compressive sensing, DOA estimation, minimum variance distortionless response.

Abstract

The objective of this work is to estimate the sparse angular power spectrum using a towed acoustic pressure sensor (APS) array. In a passive towed array sonar, any reduction in the analog sensor signal conditioning receiver hardware housed inside the array tube, significantly improves the signal integrity and hence the localization performance. In this paper, a novel sparse acoustic pressure sensor (SAPS) array architecture is proposed to estimate the direction of arrival (DOA) of multiple acoustic sources. Bearing localization is effectively achieved by customizing the Capons spatial filter algorithm to suit the SAPS array architecture. Apart from the Monte Carlo simulations, the acoustic performance of the SAPS array with compressively sensed minimum variance distortionless response (CS-MVDR) filter is demonstrated using a real passive towed array data. The proposed sparse towed array architecture promises a significant reduction in the analog signal acquisition receiver hardware, transmission data rate, number of snapshots and software complexity.

Defence Science Journal, 2013, 63(6), pp.630-635, DOI:http://dx.doi.org/10.14429/dsj.63.5765

Author Biographies

N. Suresh Kumar, Naval Physical and Oceanographic Laboratory, Kochi

Mr N. Suresh Kumar received his ME degree in electrical communications from the Indian Institute of Science (IISc), Bangalore, India in 1995. He is currently Scientist ‘F’, Naval Physical and Oceanographic Laboratory, Kochi. His research areas include under water acoustics, array processing, sonar signal processing, compressive sensing and sensor networks.

C. Bhattacharya, Naval Physical and Oceanographic Laboratory, Kochi

Dr C. Bhattacharya He received his PhD from the Dept. of Computer Science and Engg., Jadavpur University, Kolkata in 2004. He heads the Dept. of Electronics Engg., Defence Institute of Advanced technology (DIAT), Pune, India. He is also a Scientist ‘F’ with Defence Research and Development Organization. His research interests include synthetic aperture radar (SAR) signal and image processing. He is a senior member of the IEEE signal processing society, USA.

A. Unnikrishnan, Defence Institute of Advanced Technology, Pune

Dr A. Unnikrishnan received his PhD from the Indian Institute of Science (IISc), Bangalore, India in 1988. He is currently Scientist `H’ (Outstanding Scientist), Naval Physical and Oceanographic Laboratory, Kochi. His research interests include sonar signal and information processing, machine learning, and image processing.

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Published

2013-12-18

How to Cite

Kumar, N. S., Bhattacharya, C., & Unnikrishnan, A. (2013). Passive Source Localization Using Compressively Sensed Towed Array. Defence Science Journal, 63(6), 630–635. https://doi.org/10.14429/dsj.63.5765

Issue

Vol. 63 No. 6: Optical and Electro-Optical Instrumentation

Section

Armaments & Explosives

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