浅海爆炸声传播损失及简正波分离实验研究

摘要

文章简要介绍了浅海声传播损失的研究背景和基本理论方法.通过1/3倍频程滤波对浅海爆炸宽带信号的不同频段在浅海的传播损失情况进行了分析,描述了浅海环境对声传播损失的影响；同时在不知道先验信息的条件下,利用垂直阵声压数据成功地进行了简正波分离,并与理想条件下Kraken简正波模型计算出的结果进行了比较分析.%The paper presents research background and basic theory and method of acoustic transmission loss in the shallow water. The effects due to sound transmission loss by shallow water environment are described through analyzing the transmission loss with explosive sound signal at different frequency range filtered by third octave. With no priori knowledge, the normal modes are successfully extracted from the sound pressure data derived from the vertical liner receiver arrays (VLAs). The comparison of normal modes extracted and calculated by Kraken Mode Model is also presented.