地下通信是一种将无线电收发信设备及其天线、馈线等全部设置在地下(工事或矿井内)的通信方式。具有隐蔽与抗毁等优点,在军事上有着广泛的用途。 根据无线电波的传播途径,地下通信可分为: 1)无线电波在地下传播。常用的方法有两种。一种是在地下设施内架设泄漏电缆,利用它与无线电台的天线产生电磁耦合来进行通信(也叫耦合式通信)。通信范围与泄漏电缆布设的长度有关,适于在同一地下设施内部的无线电通信,工作频率宜选用米波或分 Underground communication is a type of communication in which all the radio transceivers and their antennas, feeders, etc., are set underground (fortifications or mines). Has the advantages of concealment and anti-destruction, has a wide range of uses in the military. According to the propagation of radio waves, underground communications can be divided into: 1) radio waves spread in the ground. There are two commonly used methods. One is to set up a leaky cable in an underground facility and use it to make electromagnetic coupling with the radio’s antenna (also known as coupled communication). The communication range is related to the length of the layout of the leaky cable and is suitable for the radio communication within the same underground facility. The working frequency should be selected by the meter or minute