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Sensors 2013, 13(4), 5302-5316; doi:10.3390/s130405302

A PARALIND Decomposition-Based Coherent Two-Dimensional Direction of Arrival Estimation Algorithm for Acoustic Vector-Sensor Arrays

1
College of Electronic and Information Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China
2
Nanjing Panda Electronics Group, Nanjing 210008, China
3
Laboratory of Modern Acoustic of Ministry of Education, Nanjing University, Nanjing 210093, China
*
Author to whom correspondence should be addressed.
Received: 20 February 2013 / Revised: 28 March 2013 / Accepted: 4 April 2013 / Published: 19 April 2013
(This article belongs to the Special Issue Last Trends in Acoustic Sensing)
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Abstract

In this paper, we combine the acoustic vector-sensor array parameter estimation problem with the parallel profiles with linear dependencies (PARALIND) model, which was originally applied to biology and chemistry. Exploiting the PARALIND decomposition approach, we propose a blind coherent two-dimensional direction of arrival (2D-DOA) estimation algorithm for arbitrarily spaced acoustic vector-sensor arrays subject to unknown locations. The proposed algorithm works well to achieve automatically paired azimuth and elevation angles for coherent and incoherent angle estimation of acoustic vector-sensor arrays, as well as the paired correlated matrix of the sources. Our algorithm, in contrast with conventional coherent angle estimation algorithms such as the forward backward spatial smoothing (FBSS) estimation of signal parameters via rotational invariance technique (ESPRIT) algorithm, not only has much better angle estimation performance, even for closely-spaced sources, but is also available for arbitrary arrays. Simulation results verify the effectiveness of our algorithm.
Keywords: arbitrary array; acoustic vector-sensor; coherent angle estimation; PARALIND decomposition arbitrary array; acoustic vector-sensor; coherent angle estimation; PARALIND decomposition
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Zhang, X.; Zhou, M.; Li, J. A PARALIND Decomposition-Based Coherent Two-Dimensional Direction of Arrival Estimation Algorithm for Acoustic Vector-Sensor Arrays. Sensors 2013, 13, 5302-5316.

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