Calibration errors of uniform linear sensor arrays for DOA estimation: an analysis with SRP-PHAT
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Mikael Swartling, Nedelko Grbic |
| Title: | Calibration errors of uniform linear sensor arrays for DOA estimation: an analysis with SRP-PHAT |
| Journal: | Signal Processing |
| Year: | 2011 |
| Volume: | 91 |
| Issue: | 4 |
| Pagination: | 1071-1075 |
| ISSN: | 0165-1684 |
| Publisher: | Elsevier |
| URI/DOI: | 10.1016/j.sigpro.2010.09.018 |
| ISI number: | 000286864700040 |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Engineering - Dept. of Electrical Engineering (Sektionen för ingenjörsvetenskap - Avd. för elektroteknik) School of Engineering S-371 79 Karlskrona +46 455 38 50 00 http://www.bth.se/ing/ |
| Authors e-mail: | msw@bth.se |
| Language: | English |
| Abstract: | 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. |
| Subject: | Signal Processing\General |
| Keywords: | Direction of arrival estimation, Calibration |
