| 摘要: |
| 主要分析了天线磁感应方式、地电极电流场方式以及弹性波方式3种矿山透地通信技术的工作机理、技术特点以及受分层大地介质信道的影响情况，对比了它们的传输衰减、发送设备体积、发射功率以及能量效率等功能参数，最后得出了结论：3种透地通信方式都工作在低频波段，天线磁感应方式和地电极方式的传输衰减较之弹性波方式的要小，而弹性波方式和地电极方式所需的发送设备体积比天线磁感应方式的要小；地电极电流场方式能量效率比其它天线磁感应和弹性波方式要高；弹性波方式透地通信受地层力学特性影响太大，尤其是松散介质层. |
| 关键词: 透地通信 VLF（甚低频） 传输衰减 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（61272432）；青岛市科技计划基础研究项目（12146（1）jch） |
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| Analysis and comparison of several through-the-earth communication technologies for mining |
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| Abstract: |
| Three kinds of through-the-earth communication technology, inductive coupling by antenna, current injection by means of ground electrodes and transmitting by elastic wave, were introduced, as well as the operating principles, performance and characteristics of stratified earth channel were also discussed. And the propagation attenuation, frequency band and power efficiency were analyzed and compared. Conclusions can be drawn as follow: the communication system by ground electrode is more prospecting among the three, though the loop antenna scheme is popular recently;the efficiency of ground electrodes scheme is higher than that of the rest two methods;the communication of elastic wave method is more influnceable by the Mechanics characteristics of the earth layer, especially when it is soil. |
| Key words: through-the-earth communication VLF transmission attenuation |
