Subsurface Radar: aspects of Pulsed and Frequency Modulated Systems

For some years, ground penetrating radar (GPR) has been deployed in a number of surface and<br>borehole applications. The early systems almost all used a short pulse illuminating a limited bandwidth<br>antenna, which in turn radiated into the environment under investigation. A similar antenna is utilised<br>for reception. This is the bistatic configuration of what is commonly known as carrier-less, pulsed<br>radar, or video-pulse radar.