Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Trajectory Identification Technique for Two Rotating Sound Sources with Different Frequencies

서로 다른 주파수를 갖는 두 개의 회전음원의 위치추적에 대한 연구

  • 이종현 (충남대학교 대학원 항공우주공학과) ;
  • 이재형 (충남대학교 대학원 항공우주공학과) ;
  • 이욱 (충남대학교 대학원 항공우주공학과) ;
  • 최종수 (충남대학교 항공우주.선박해양공학부)
  • Published : 2009.07.20
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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.

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References

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