Blind Sensor Array Calibration and Doa Estimation of Broadband Sources

Ramamohan, KN and Prabhakar Chepuri, S and Comesana, DF and Leus, G (2019) Blind Sensor Array Calibration and Doa Estimation of Broadband Sources. In: 2019 53rd Asilomar Conference on Signals, Systems, and Computers, 3-6 Nov. 2019, Pacific Grove, CA, USA, USA, pp. 1304-1308.

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Abstract

In this paper, we focus on the gain and phase calibration of a sensor array and the direction-of-arrival (DOA) estimation of multiple far-field broadband sources. By leveraging the fact that the calibration errors vary across frequencies smoothly and the DOAs of broadband sources are the same for the frequency range of interest, we propose a blind calibration method to jointly estimate the gain and phase errors. This joint estimation problem is a non-convex optimization problem. Hence, it is relaxed to a convex optimization problem by exploiting the underlying algebraic structure. Numerical and experimental results using real measurement data are presented, to illustrate the efficiency of the proposed solver. Both results are based on an acoustic vector sensor (AVS) linear array. © 2019 IEEE.

Item Type:	Conference Paper
Publication:	Conference Record - Asilomar Conference on Signals, Systems and Computers
Publisher:	IEEE Computer Society
Additional Information:	cited By 0; Conference of 53rd Asilomar Conference on Circuits, Systems and Computers, ACSSC 2019 ; Conference Date: 3 November 2019 Through 6 November 2019; Conference Code:158954
Keywords:	Blind equalization; Blind source separation; Calibration; Computer circuits; Convex optimization, Acoustic vector sensor; Algebraic structures; Calibration method; Convex optimization problems; Direction of arrivalestimation(DOA); Gain and phase error; Joint estimation problems; Nonconvex optimization, Direction of arrival
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	07 Sep 2020 07:45
Last Modified:	07 Sep 2020 07:45
URI:	http://eprints.iisc.ac.in/id/eprint/65261

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