Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Position Estimation of Sound Source Using Three Optical Mach-Zehnder Acoustic Sensor Array

  • Hwang, Jeong-hwan (Department of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology) ;
  • Seon, Seokpyeong (Department of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology) ;
  • Park, Chang-Soo (Department of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology)
  • Received : 2017.11.14
  • Accepted : 2017.11.22
  • Published : 2017.12.25
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Abstract

Position estimation of a sound source based on time difference of arrival at an array of three acousto-optic sensors is introduced. Each sensor consists of a Mach-Zehnder interferometer including a sensing part in one arm that is a piece of fiber surrounded by membrane in order to enhance the acousto-optic effect. Estimation error of a recorded gunshot sound signal was evaluated with the theoretically calculated values for two different locations.

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References

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