음선 기반 블라인드 디컨볼루션을 이용한 선박 소음으로부터의 채널 임펄스 응답 추정

Abstract

The Shallow-water Acoustic Variability Experiment 2015 (SAVEX15) conducted in the Northern East China Sea (ECS) in May 2015 demonstrated that the channel impulse response can be estimated by the shipping noise using ray-based synthetic time reversal (STR) method (S. H. Byun and K. G. Sabra, 2016). Ray-based synthetic time reversal (or artificial time reversal) is a technique for blind deconvolution which determines the impulse response from the received signals when the source signal and the environment’s impulse response are both unknown (S. H. Abadi et al. 2012). The experiment utilized a vertical line array (VLA) of 16 elements spanning 56.25 m of a 100-m water column. This paper describes how ray-based STR can be exploited for the channel impulse response estimation from a variety of the shipping noise data with a bandwidth of 200