【作者】 李凡； 张涵； 郭圣明；

【Author】 LI Fan, ZHANG Han, GUO Sheng-ming(Institute of Acoustics, Chinese Academy of Sciences, 100080, P. R. China)

【机构】 中国科学院声学研究所；

【摘要】 由于不同简正波存在的群速度差异,可以从到达时间结构上将它们分离开,提取相应的简正波参数。本文主要是对2002年1月黄海北部海域声传播实验数据进行处理,利用接收到的爆炸声传播信号,分析低阶简正波的频散关系,并根据其反演得到海底声速,结果同以前利用声传播损失的参数反演结果吻合。更多还原

【Abstract】 Because of their different group velocities, normal modes can be separated with each other in the time series as the propagation distance increases. This fact can be used for the mode parameters extraction. In this paper, the data obtained in the experiment conducted in the Yellow Sea in the winter of 2002 has been processed. Owing to the collected broadband signals by use of explosive charges, the sea-bottom parameters for different frequencies can be deduced in the same time according to the resulted mode dipersion relationships. The results coincide with those former results obtained by use of propagation loss fit method.更多还原