환형배열에서 닫힌 형식을 이용한 코히어런트 분산 단일음원의 위치 추정 기법|RISS 상세보기

다국어 초록 (Multilingual Abstract)

In this paper, we propose a method for estimating the position of a source in a closed form when a single source has coherently distributed property against a circular array. When a sound source reaches a sensor through multipath environments, it is seen as a distributed source and can be represented by four variables: the nominal azimuth, nominal elevation, azimuth angular spread, elevation angular spread. Therefore, it requires a lot of computation by a search method such as DSPE (Distributed Source Parameter Estimator). In this paper, we propose a method of estimating the nominal azimuth and elevation angle in a closed form using correlation function and least squares method for fast position estimation. In particular, if the source is assumed as Gaussian distribution model, the standard deviation is also estimated in a closed form. In the simulation, the validity of the proposed method is confirmed by comparing with the DSPE.

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참고문헌 (Reference)

1 정태진, "원근 혼합환경에서 간단한 닫힌 형식을 이용한 단일 음원 위치 추정 기법" 한국음향학회 35 (35): 35-41, 2016

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5 Y. U. Lee, "Distributed source modeling and direction-of-arrival estimation techniques" 45 : 960-969, 1997

6 R. Raich, "Bearing estimation for a distributed source: modeling, inherent accuracy limitations and algorithm" 48 : 429-441, 2000

7 B. Liao, "A generalized algorithm for fast two dimensional angle estimation of a single source with uniform circular array" 11 : 984-986, 2012

8 J. G. Nam, "2-D nominal angle estimation of multiple coherently distributed sources in a uniform circular array" 13 : 415-418, 2014