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http://dx.doi.org/10.5050/KSNVN.2009.19.7.710

A Trajectory Identification Technique for Two Rotating Sound Sources with Different Frequencies  

Lee, Jong-Hyun (충남대학교 대학원 항공우주공학과)
Lee, Ja-Hyung (충남대학교 대학원 항공우주공학과)
Rhee, Wook (충남대학교 대학원 항공우주공학과)
Choi, Jong-Soo (충남대학교 항공우주.선박해양공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.19, no.7, 2009 , pp. 710-718 More about this Journal
Abstract
The time difference of arrival(TDOA) algorithm is being used widely for identifying the location of a source emanating either electrical or acoustic signal. It's application areas will not be limited to identifying the source at a fixed location, for example the origin of an earthquake, but will also include the trajectory monitoring for a moving source equipped with a GPS sensor. Most of the TDOA algorithm uses time correlation technique to find the time delay between received signals, and therefore difficult to be used for identifying the location of multiple sources. In this paper a TDOA algorithm based on cross-spectrum is developed to find the trajectory of two sound sources with different frequencies. Although its application is limited to for the sources on a disk plane, it can be applied for identifying the locations of more than two sources simultaneously.
Keywords
Source Positioning; TDOA(time difference of arrival); Cross Spectrum; Measurement of TDOA; Rotating Noise Source;
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Times Cited By KSCI : 1  (Citation Analysis)
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