The COBRA WIRELESS GPR collects data from  hundred thousands of pulse reflections each second to  help researchers identify objects below ground. It works in a multi frequency band from 100 to 900 MHz, thus replacing 2-3 antennas with different frequencies used by other and older GPR systems
An antenna sends pulses of radar energy into the ground and another receives the information that bounces back up.  The depth penetration depends on frequency, water content and material conductivity. The typical penetration with Cobra Wireless GPR is 1,5-4,5 m. The maximum penetration is 10 m or 500 ns