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黄河水含沙量大,使得水声、激光、无线电波等信号衰减严重,无法满足黄河水下探测的通信要求。为此,结合水体能够导电的特点,提出了利用电流场实现水下通信的思想;根据电磁场理论,建立了水下电流场通信信道模型,分析了接收信号与发射电压、通信距离等参数之间的关系;研制了水下电流场通信装置,试验证明双向通信准确可靠,简单易行,为黄河淤泥层中的水下探测提供了切实可行的通信手段。
The Yellow River contains a large amount of sediment, which makes waterborne, laser and radio waves seriously attenuate signals and can not meet the communication requirements of underwater exploration of the Yellow River. Therefore, the idea of using electric current field to realize underwater communication is put forward based on the characteristics that water can conduct electricity. According to the theory of electromagnetic field, a model of underwater current field communication channel is established, and the relationship between received signal, emission voltage, communication distance and other parameters The experimental results show that the two-way communication is accurate, reliable and easy to operate, which provides a practical means of communication for underwater exploration in the Yellow River silt layer.