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85.地质雷达技术地质雷达又称探地雷达,是一种用于确定地下介质频率(1MHz￣1GHz)的电磁探测技术。地质雷达利用一个天线发射高频宽频带电磁波,另一个天线接收来自地下介质界面的反射波。电磁波在介质中传播时,其路径、电磁场强度与波形将随经过介质的电性以及几何形态而变化。因此,根据接收波的运行时间(实际上是双程走时)、幅度、相位等波形资料,
85. Geological radar technology Geological radar, also known as ground penetrating radar, is an electromagnetic detection technique used to determine the frequency of underground media (1 MHz to 1 GHz). Geological radars use one antenna to transmit high-frequency broadband electromagnetic waves while the other antenna receives reflected waves from the interface of the underground media. When the electromagnetic wave propagates in the medium, the path, the intensity and the waveform of the electromagnetic field will vary with the electrical properties and the geometry of the medium. Therefore, according to the receiving wave of running time (in fact, two-way travel time), amplitude, phase and other waveform data,