Answer
Jan 22, 2021 - 03:01 PM
A GPR generally consists of three modules – a transmitter and a receiver antenna and an analogue to digital converter unit. The transmitter module produces very fast pulses consisting of ultra-wideband frequencies that penetrate almost any medium and the receiver module listens to the reflected signal from the scanned medium. This in turn is sent to the Analog to Digital converter that quantifies the signal to computer readable values. The varying permittivities of different objects and materials produce reflections in the returning signal allowing the detection of cavities, buried objects and any other changes in the subsurface structure.