Unprocessed Ground Radar data showing a borehole
cap
The internal characterisation of a medium is achieved when an antenna
transmits a radiowave through a medium. This radiowave travels through
the medium and is reflected back as the composition of the medium alters;
this may due to a pipe, cable or a change in medium density. A receiving
antenna detects this reflected radiowave. When the receiving antenna
detects a radiowave, it is sent to the GPR system’s control unit.
The control unit digitises the radiowaves in real-time and displays
them on a screen.
This real-time image allows for a preliminary on-site
interpretation and the potential of a detailed, spatially specific
GPR investigation.