近海海洋环境对水声网络性能影响试验评估

Experimental Evaluation of Influence of Offshore Marine Environment on Underwater Acoustic Network Performance

摘要:

水声网络已成为海洋信息获取、传输和感知的关键技术，并得到广泛研究。目前的水声通信研究主要集中于考虑时延、多径等水声信道影响因素。当海洋环境发生变化时，水声信道中的时延、多径的特性也会相应发生变化，从而影响水声通信系统的性能。然而，对于复杂海洋环境现象与水声网络性能的直接关联性的研究还较为有限。基于厦门海域进行的水声网络实验，从平均端到端时延、丢包率等网络性能指标评估风、浪、潮汐等典型近海海洋环境因素对水声网络性能的影响，并基于试验结果对海洋环境与水声网络性能进行关联性分析，实验结果表明：水声通信网络的时延受到温度、风速和潮位变化的影响，存在一定程度的关联性。评估分析结论可为复杂近海海洋环境下水声通信网络的设计和应用提供参考。

关键词:水声通信网络;海洋环境;多径;潮汐

Abstract:

Underwater acoustic network has become the key technology of ocean information acquisition， transmission and perception，and has been widely studied. At present，the research of underwater acoustic communication mainly focuses on the factors affecting underwater acoustic channels such as delay and multipath. When marine environment changes，the characteristics of delay and multipath in underwater acoustic channel will change accordingly，which will affect the performance of underwater acoustic communication system. However， study on the direct correlation between complex marine environmental phenomena and underwater acoustic network performance is still limited. Based on the underwater acoustic network experiment conducted in Xiamen sea area，the impact of typical offshore marine environmental factors such as winds，waves and tides on the underwater acoustic network performance are evaluated from the average end-to-end delay，packet loss rate and other network performance indicators. Based on the test results，the correlation between the marine environment and the underwater acoustic network performance is analyzed. The experimental results show that the delay of underwater acoustic communication network is affected by temperature，wind speed and tide level. The evaluation and analysis results of this paper can provide reference for the design and application of underwater acoustic communication network in complex offshore marine environment.

Key words:underwater acoustic communication network;marine environment;multipath;tide