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Calibration errors of uniform linear sensor arrays for DOA estimation: an analysis with SRP-PHAT
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2011 (English)In: Signal Processing, ISSN 0165-1684, E-ISSN 1872-7557, Vol. 91, no 4, 1071-1075 p.Article in journal (Refereed) Published
Abstract [en]

This article presents an analysis of the sensitivity of geometrical sensor errors in acoustic source localization using the well-established SRP-PHAT method. The array in this analysis is a uniform linear array and the intended source is human speech in the far field. Two major results are presented: inner-sensor geometrical errors in the linear array produce smaller localization errors than corresponding geometrical errors do in the two end-point sensors, and the localization error rises sharply for a total geometrical error exceeding the equivalence of the acoustic propagation distance of 2/3 of the sample time instance (approximately 3 cm at 8 kHz). The article also provides a mathematical and graphical explanation of the results.

Place, publisher, year, edition, pages
Elsevier , 2011. Vol. 91, no 4, 1071-1075 p.
Keyword [en]
Direction of arrival estimation, Calibration
National Category
Signal Processing
URN: urn:nbn:se:bth-7557DOI: 10.1016/j.sigpro.2010.09.018ISI: 000286864700040Local ID: diva2:835182
Available from: 2012-09-18 Created: 2011-05-24 Last updated: 2015-06-30Bibliographically approved

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Swartling, Mikael
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