阵列式水声传感器在水下通信中的应用  

Applications of Underwater Acoustic Sensor Array in Underwater Communication

作　　者：张雷[1] 何宁[1] 龚雨心 何志毅[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《仪表技术与传感器》2014年第11期11-14,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金(61077036)

摘　　要：依据海洋中水汽界面和海底对信号传输多途反射的影响,分析了水声信道特性与信号传输机理,研究水声信道中声传感器阵列结构与传输性能关系,探讨水声传感阵列方式在水下通信环境的优势。利用MATLAB仿真对阵列波束宽度进行了优化,设计了性能良好的阵列驱动和阻抗匹配电路。水下试验测试表明:依据通信的水深环境,选择合适的声阵列结构和波束宽度,在波束宽度小于30°时,换能器能量损失减小,系统水声通信性能最佳。According to the muhipath effect caused by the surface reflection and bottom reflection,the characteristics of acoustic channel and transmission mechanism were analyzed, the relationship between array structure and transmission performance was studied, the advantage of sensor array in underwater acoustic communication was presented. The beam width was optimized with MATLAB, the array driving circuit and impedance matching circuit were designed. The underwater experimental results show that, the performance of underwater acoustic communication is optimal with proper array structure and beam width of less than 30° in underwater environment,the energy loss of transducer is reduced.

关 键 词：水声通信 阵列 多途效应 指向性 波束宽度 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]