Time-varying Ocean Channel Modeling Method

doi:10.16182/j.issn1004731x.joss.20-0026

Abstract

Abstract: For the ocean channel with extremely complicated situation, an underwater acoustic channel modeling algorithm which can reflect the sparsity, time-varying and space-varying characteristics is proposed. Based on the prior information obtained from the sea trials in a specific sea area, the statistical characteristics of the channel impulses response structure with time and space are obtained. According to the obtained channel sparsities and non-zero position vectors’ statistics, a time-varying underwater acoustic channel model match the real environment is generated. Based on the measured data of marine communication in specific sea area, the simulation results show that the proposed algorithm is more suitable for the actual ocean channel than the traditional one, and the scope of application is wider, which effectively solves the waste of financial resources and time at sea in the actual marine communication technology research.

Key words: prior information, channel impulse response, channel sparsity, non-zero position vector, time-varying underwater acoustic channel

CLC Number:

TP391.9

Pei Yuehua, Su Wei, Tao Jincheng, Jiang Xialin. Time-varying Ocean Channel Modeling Method[J]. Journal of System Simulation, 2021, 33(5): 1104-1112.

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