针对目前水下无线通信天线传输结构复杂,架设困难且高频衰减严重等问题。提出了一种基于电流场的阵列极板通信系统,发射端采用极板阵列来增强信号接收强度。结合电流场理论,推导了水下阵列极板传输公式,通过有限元仿真分析不同阵列数量和通信距离下的信号强度和电场分布特性, 分析添加绝缘材质和改变发射端入水深度对接收效果的影响。搭建实验平台测试了1×2和1×4极板阵列,验证频率和阵列数量对接收效果的影响。实验结果表明,在低频状态下,保持发射电压幅值和功率不变的情况下,将发射极板排布成阵列,并在发射端添加绝缘材质有助于提高接收信号强度。此外,发射端和接收端平行排列能够获得更好的接收效果。通过精确控制极板阵列的数量和排布,可以实现水下远距离通信,为水下电流场通信系统的研究和优化提供了参考。

In addressing the current challenges of complex underwater wireless communication antenna structures, difficult deployment, and severe high-frequency attenuation, a communication system based on an array of plate elements utilizing the electric current field is proposed. At the transmitting end, a plate array is employed to enhance signal reception intensity. Drawing on current field theory, the underwater array plate transmission formula is derived. Through finite element simulation analysis of signal strength and electric field distribution characteristics under different array quantities and communication distances, the impact of adding insulating materials and altering the depth of submersion at the transmitting end on reception effectiveness is analyzed. An experimental platform was set up to test 1×2 and 1×4 plate arrays, validating the influence of frequency and array quantity on reception effectiveness. The experimental results indicate that in low-frequency states, maintaining constant transmission voltage amplitude and power, arranging the transmission plate in an array, and adding insulating material at the transmitting end contribute to improving received signal strength. Additionally, parallel arrangement of the transmitting and receiving ends results in better reception. Precise control of the quantity and arrangement of plate arrays can facilitate long-distance underwater communication, providing valuable insights for the research and optimization of underwater electric field communication systems.

国家自然科学基金资助项目(61364008)； 云南省基础研究计划重点资助项目(202101AS070016)；