Long range incoherent seafloor reverberation model based on coupled normal mode method

Abstract

핵심용어: 양상태 비상관 잔향음, 연성모드법, 거리 종속 환경ABSTRACT: In this paper, the incoherent reverberation model based on coupled normal mode method is presented. In the range dependent environment, one way coupled normal mode method is used to calculate the pressure from a source to a scatterer patch and the pressure from a scatterer patch to a receiver. For the computational efficiency, the sound propagation from a source/receiver to the scatterer patch is assumed to occur only in the 2D plane where a source/receiver and scatterer patch are located. For the model verification, problems of the reverberation modeling workshop I and II sponsored by the US office of Naval Research are calculated and the results are compared with the incoherent reverberation model results based on the ray method.

Bistatic reverberation simulation using intersection of scattering cross section between sound source and receiver

“…선 방정식, [3] 정상모드이론, [4][5][6] 음선이론 기반 [7,8] 의 잔향음 모델들이 연구되어졌고, 국내에서는 Kim et al [9] 이 포물선 방정식을 기반으로 천해에서의 양상 태 잔향음 모델을 제안한 이후로 음선이론 [10,11] 과 정 상모드이론 [12,13] 을 을 계산하는 방법도 중요하다. [14] 양상태 산란단면적은 단위 면적에 대해 계산할 경 우, [15] [16] 의 방법과 Weinberg [8] 가 제안한 방법을 사용한다.…”