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使用倒谱滤波降低水声信道中的多径传播效应

Reduction of the Multipath Propagation Effect in a Hydroacoustic Channel Using Filtration in Cepstrum.

作者信息

Czapiewska Agnieszka, Luksza Andrzej, Studanski Ryszard, Zak Andrzej

机构信息

Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.

Faculty of Electrical Engineering, Gdynia Maritime University, Morska 81-87, 81-255 Gdynia, Poland.

出版信息

Sensors (Basel). 2020 Jan 29;20(3):751. doi: 10.3390/s20030751.

DOI:10.3390/s20030751
PMID:32013243
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7038370/
Abstract

During data transmission in a hydroacoustic channel, one of the problems is the multipath propagation effect, which leads to a decrease in the transmission parameters and sometimes completely prevents it. Therefore, we have attempted to develop a method, which is based on a recorded hydroacoustic signal, that allows us to recreate the original (generated) signal by eliminating the multipath effect. In our method, we use cepstral analysis to eliminate replicas of the generated signal. The method has been tested in simulation and during measurements in a real environment. Additionally, the influence of the method on data transmission in the hydroacoustic channel was tested. The obtained results confirmed the usefulness of the application of the developed method and improved the quality of data transmission by reducing the multipath propagation effect.

摘要

在水声信道的数据传输过程中，问题之一是多径传播效应，这会导致传输参数下降，有时甚至会完全阻碍数据传输。因此，我们尝试开发一种基于记录的水声信号的方法，该方法能够通过消除多径效应来重建原始（生成的）信号。在我们的方法中，我们使用倒谱分析来消除生成信号的副本。该方法已在模拟环境以及实际环境中的测量过程中进行了测试。此外，还测试了该方法对水声信道中数据传输的影响。获得的结果证实了所开发方法应用的有效性，并通过降低多径传播效应提高了数据传输质量。

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Heart rate estimation from FBG sensors using cepstrum analysis and sensor fusion.使用倒谱分析和传感器融合从光纤布拉格光栅（FBG）传感器进行心率估计。
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Hydroacoustic System in a Biomimetic Underwater Vehicle to Avoid Collision with Vessels with Low-Speed Propellers in a Controlled Environment.仿生水下航行器的水声系统在受控环境中避免与低速螺旋桨船只碰撞。
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