一种时变海洋信道建模方法  

Time-varying Ocean Channel Modeling Method

作　　者：裴月华 苏为[1] 陶金成 江霞林 Pei Yuehua;Su Wei;Tao Jincheng;Jiang Xialin(School of Informatics,Xiamen University,Xiamen 361005,China)

机构地区：[1]厦门大学信息学院,福建厦门361005

出　　处：《系统仿真学报》2021年第5期1104-1112,共9页Journal of System Simulation

基　　金：国家自然科学基金面上项目(61671398)。

摘　　要：对于情况极其复杂的海洋信道,提出了一种能够反映水声信道稀疏度、时变和空变特性的水声信道建模算法。基于特定海域海上实验获得的先验信息,得到信道冲击响应结构随时间、空间变化的统计规律特性,根据获得的信道稀疏度与非零位置向量统计数据,生成符合该海域真实环境的时变水声信道模型。基于特定海域的海洋通信实测数据进行对比,实验结果显示该建模方案提出的算法比传统的水声信道建模技术与实际海洋信道更加匹配且适用范围更广泛,有效解决了实际海洋通信技术研究中出海费时费力的问题。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.

关 键 词：先验信息 信道冲击响应 信道稀疏度 非零位置向量 时变水声信道 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]