电流场透地通信电场的数学建模与分析

电流场透地通信系统通过收发两端插入地下的电极，以电场电流的形式承载信息数据，完成信号的发送和接收，能够实现超过300米的传输范围，并且具有传输衰减小、天线尺寸小、灵活性好等优势。为了有效提高电流场透地通信系统的性能，了解地下电场的分布是具有十分重要意义的。本文构建了地下电场的三维模型，给出了三个电场分量的完整显式解，并基于模型与表达式，仿真分析了收发天线的偏移量、相对方位、长度以及工作频率对电场分布的影响。结果表明，通过合理地选择这些参数能够有效提高接收电极的接收电压，从而改进地面与地下的通信效果。

Mathematical modeling and analysis for electric fields of current field through-the-earth communication

The current field through-the-earth(TTE) communication system carries information data in the form of electric field current through electrodes inserted into the ground at both ends of transmitting and receiving, and completes signal transmission and reception.?It can achieve a transmission range of more than 300 meters and has the advantages of small transmission attenuation, small antenna size, good flexibility, and so on. To design and improve the performance of the current field TTE communication system, it is important to understand the distribution of underground electric field. In this paper, a three-dimensional model of the underground electric field was constructed, and the complete explicit solutions of the three electric field components were given. Based on the model and expression, the effects of transmit and receive antennas offset, relative orientation, length, and operating frequency on the electric field distribution were analyzed. The results show that the received voltage of the receive electrode can be effectively increased by selecting these parameters properly, and the communication effect between ground and underground can be improved.