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浅水环境下声学通信的模态处理实验

Modal processing for acoustic communications in shallow water experiment.

作者信息

Morozov Andrey K, Preisig James C, Papp Joseph

出版信息

J Acoust Soc Am. 2008 Sep;124(3):EL177-81. doi: 10.1121/1.2960954.

DOI:10.1121/1.2960954
PMID:19045562
Abstract

Acoustical array data from the Shallow Water Acoustics experiment was processed to show the feasibility of broadband mode decomposition as a preprocessing method to reduce the effective channel delay spread and concentrate received signal energy in a small number of independent channels. The data were collected by a vertical array designed at the Woods Hole Oceanographic Institution. Phase-shift Keying (PSK) m-sequence modulated signals with different carrier frequencies were transmitted at a distance 19.2 km from the array. Even during a strong internal waves activity a low bit error rate was achieved.

摘要

对浅水声学实验的声学阵列数据进行了处理,以展示宽带模式分解作为一种预处理方法的可行性,该方法可减少有效信道延迟扩展,并将接收信号能量集中在少数几个独立信道中。数据由伍兹霍尔海洋研究所设计的垂直阵列收集。在距阵列19.2公里处发射了具有不同载波频率的相移键控(PSK)m序列调制信号。即使在强烈的内波活动期间,也实现了较低的误码率。

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