직선 운동을 하는 선형 배열 트랜스듀서를 이용한 수중 음원의 위치 추정

Abstract

In order to explore ocean environment various kinds of sonar systems are used. Among them transducer arrays play an important role for bathymetric survey and underwater acoustic imaging. Multibeam echo sounders and imaging sonars are good examples. Recently, the synthetic aperture technique is applied to a transducer array for improving underwater acoustic images. This paper briefly reviews the fundamentals of beamforming and synthetic aperture techniques. Numerical simulations are also performed to investigate the effect of the synthetic aperture size and source models. The simulation results say that the synthetic aperture processing improves the angle or position resolution and a spherical wave must be used as a source model for a large synthetic aperture.xamples. Recently, the synthetic aperture technique is applied to a transducer array for improving underwater acoustic images. This paper briefly reviews the fundamentals of beamforming and synthetic aperture techniques. Numerical simulations are also performed to investigate the effect of the synthetic aperture size and source models. The simulation results say that the synthetic aperture processing improves the angle or position resolution and a spherical wave must be used as a source model for a large synthetic aperture.