基于海底反射相移的海洋环境参数快速反演方法

Xiaoman Li, Xuejie Bi, Hongyun Chen, Hongyu Lu
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引用次数: 0

摘要

通过分析接收到的声信号,可以估计出海洋环境参数。在具有高速底波的浅水波导中,声信号的传输损耗可以通过由底波参数组成的底反射相移来获得。提出了一种基于海底反射相移的海洋环境参数快速反演方法。贝叶斯反演理论是该方法应用的理论框架。由实测数据得到的信号即为输入函数,利用水柱底部反射位移参数等参数可快速计算出副本。在不需要先验海洋环境信息的情况下,利用后验概率密度准确地估计了传播范围、深度和部分地声参数。该方法适用于大多数浅水波导,也适用于不同带宽的声信号。实验数据验证了反演结果的准确性和有效性。
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A fast inversion method of marine environment parameters based on bottom reflection phase shift
The marine environment parameters can be estimated by analyzing the received sound signal. In shallow water waveguide with high-speed bottom, the transmission loss of sound signal can be obtained by the bottom reflection phase shift, which consists of the bottom parameters. A fast inversion method of the marine environment parameters based on bottom reflection phase shift is presented in this paper. Bayesian inversion theory is the theoretical framework for the application of this method. The signal obtained from the measured data is the input function, and the replica can be calculated by the bottom reflection shift parameter and other parameters in water column quickly. The propagation range and depth, and some geoacoustic parameters were estimated accurately by the posterior probability density without the prior knowledge of the marine environment information. This method can be applied to most shallow water waveguides, and is also applicable to acoustic signals with different bandwidths. The accuracy and validity of the inversion results are verified by the experimental data.
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