摘要
本文主要介绍了透地通信技术的发展,透地通信机理及其性能;并对透地信号的传播衰减、信道的带宽和系统的功率利用效率进行了分析。可知:在目前研究的技术中,天线感应方式应用最广,但由于地电极方式能量效率高,因而是比较有前景的。弹性波透地通信方式由于使用振动源会产生弹性波信号,因而不适合在发生岩爆和冒顶时使用。
In this paper, development of through-the-earth communication technologies is summarized, as well as the operating principles and performances. The propagation loss, frequency band and power efficiency are also analyzed. We can know that among these technologies, the antenna induction method is more popular, but the communication system with ground electrodes is more promising due to its high energy efficiency. The communication with elastic wave （seismic） is not suitable for emergency communication when the accidents of rock burst or land slide occur.
基金
Foundation item： National Nature Science Foundation of China （No. 61272432）
关键词
透地通信
超低频
传输衰减
through-the-earth communication
very low frequency
transmission attenuation
