基于水介质导电特性的水下信号传输方法及应用

Underwater Signal Transmission Method and Application Based on Conductivity of Water Medium

为了在注满水的金属容器内外之间实现近距离无线信号传输,文中提出了一种利用水介质导电特性进行水下信号传输的方法。首先分析了基于水介质导电特性进行信号传输的理论模型,在此基础上设计了一套通信系统,并搭建了试验测试系统,验证了此种无线信号传输方法的可行性。在试验条件下,电极相距40 cm内可以9.6 kbit/s的传输速率无误码传输信号。文中所提方法及系统可实现水下航行器内部测控系统和发射管外部通信控制系统间数据和指令的无线传输,提高试验效率。

To realize short-range wireless signal transmission between the inside and outside of a sealed metal container filled with water,a method for underwater signal transmission using conductivity of water medium is proposed.Firstly,the theoretical model of signal transmission based on conductivity of water medium is analyzed.Then,a communication system based on conductivity of water medium is designed for underwater wireless signal transmission,and a test system is built to verify the reliability of this wireless signal transmission method.Under the testing condition,the electrodes can transmit signals without error at a transmission rate of 9.6 kbit/s when their spacing is within 40 cm.The proposed method and system can realize wireless transmission of data and instructions between the internal navigation control system and the external communication control system of launch tube,and ultimately improve test efficiency.