为研究浅海高频水声信道，基于虚源法和Xiao模型建立高频水声信道模型，对其统计特性进行分析并仿真，得到高频水声信号的传播损失以及接收波形。结果表明：本文建立的高频水声模型的统计特性与理想Rice衰落过程高度吻合，传播衰减规律与球面扩展传播衰减相一致，海面（海底）反射系数对本征声线幅度衰减有明显影响。由于信道的衰减、相移以及频散等作用，接收信号波形与发射信号相比发生明显变化。
In order to research on high frequency signal acoustic channel in shallow water. The image source method and Xiao model are used to build model of high frequency acoustic communication channel in shallow water. And the statistical properties are analyzed. The transmitting losses of high frequency acoustic signal and the receiving signal waveform are get by simulation. The results show that, the statistical properties of the high frequency acoustic model are consistent with the ideal Rice model. And the transmitting losses rules are same as the spherical transmitting. The range decreases of eigen rays are influenced straightly by reflectance of sea surface and seabed. The receiving signal waveform is changed obviously with the sending signal in cause of the transmitting losses, phase changes and frequency scatters.
2021,43(5): 130-133 收稿日期：2020-07-16
DOI：10.3404/j.issn.1672-7649.2021.05.027
分类号：TB556
作者简介：丁浩(1979-)，男，博士，助理研究员，研究方向为水下航行体仿真与使用
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