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http://dx.doi.org/10.7776/ASK.2007.26.8.415

A Study on Underwater Source Localization Using the Wideband Interference Pattern Matching  

Chun, Seung-Yong (국방과학연구소)
Kim, Se-Young (한국해양대학교 전파공학과)
Kim, Ki-Man (한국해양대학교 전파공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.26, no.8, 2007 , pp. 415-425 More about this Journal
Abstract
This paper proposes a method of underwater source localization using the wideband interference patterns matching. By matching two interference patterns in the spectrogram, it is estimated a ratio of the range from source to sensor5, and then this ratio is applied to the Apollonius circle. The Apollonius circle is defined as the locus of all points whose distances from two fixed points are in a constant value so that it is possible to represent the locus of potential source location. The Apollonius circle alone, however still keeps the ambiguity against the correct source location. Therefore another equation is necessary to estimate the unique locus of the source location. By estimating time differences of signal arrivals between source and sensors, the hyperbola equation is used to get the cross point of the two equations, where the point being assumed to be the source position. Simulations are performed to get performances of the proposed algorithm. Also, comparisons with real sea experiment data are made to prove applicability of the algorithm in real environment. The results show that the proposed algorithm successfully estimates the source position within an error bound of 10%.
Keywords
Ource localization; Waveguide invariant parameter; Interference pattern matching; Circle of apollonlus; Hyperbola equation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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