The Journal of the Acoustical Society of Korea (한국음향학회지)

The Acoustical Society of Korea (한국음향학회)
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Time delay estimation by iterative Wiener filter based recursive total least squares algorithm

반복형 위너 필터 방법에 기반한 재귀적 완전 최소 제곱 방법을 사용한 시간 지연 추정 알고리즘

  • Lim, Jun-Seok (Department of Electrical Engineering, Sejong University)
  • 임준석 (세종대학교 전자정보통신공학과)
  • Received : 2021.06.25
  • Accepted : 2021.08.23
  • Published : 2021.09.30
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Abstract

Estimating the mutual time delay between two acoustic sensors is used in various fields such as tracking and estimating the location of a target in room acoustics and sonar. In the time delay estimation methods, there are a non-parametric method, such as Generalized Cross Correlation (GCC), and a parametric method based on system identification. In this paper, we propose a time delay estimation method based on the parametric method. In particular, we propose a method that considers the noise in each receiving acoustic sensor. Simulation confirms that the proposed algorithm is superior to the existing generalized cross-correlation and adaptive eigenvalue analysis methods in white noise and reverberation environments.

서로 떨어져 설치된 두 개의 음향 수신기에 도달하는 신호의 상호 지연 시간을 추정하는 것은 실내 음향과 소나 등에서 목표물 위치 추정 문제나 추적 등 여러 방면에서 쓰이고 있다. 시간 지연을 구하는 방법에서는 두 수신 신호 사이의 상호 상관을 이용한 방법으로 대표되는 비 파라메트릭 방법과 시스템 인식을 기반으로 하는 파라메트릭 방법이 있다. 본 논문에서는 파라메트릭 방법에 기반을 둔 시간 지연 추정 방법을 제안한다. 특히 음향 수신기에 잡음이 부과되는 것을 고려한 방법을 제안한다. 그리고 백색 잡음 및 잔향 환경에서 기존의 일반 상호 상관법과 적응 고유치 분석법과 비교를 통해서 새로 제안한 알고리즘이 더 우수함을 확인한다.

Keywords

Acknowledgement

본 연구는 국방과학연구소의 지원을 받아 수행되었음(UD190005DD).

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