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Bat-inspired distance measurement using phase information

Assous, Said; Jackson, Peter; Hopper, Clare; Gunn, David; Rees, John; Lovell, Mike. 2008 Bat-inspired distance measurement using phase information. Journal of the Acoustical Society of America, 124 (4). 2597.

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Abstract/Summary

A new approach to time delay estimation, based on the inclusion of phase di®erence information between components of the received sig- nal is presented. A multi-component signal has been developed to solve the phase ambiguity problem. We present the concept and investigate its effectiveness through theoretical and practical examples, including underwater acoustic measurements, taking noisy environments into ac- count. We demonstrate resolutions better than a ¯ftieth of a wave- length, even in the presence of high levels (-5dB) of additive gaussian noise.

Item Type: Publication - Article
Programmes: BGS Programmes 2008 > Land use and development
ISSN: 0001-4966
Date made live: 31 Jul 2012 10:38
URI: http://nora.nerc.ac.uk/id/eprint/18934

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