Westscan uses the latest technology with highly accurate GPR (ground penetrating radar) equipment. GPR works by using an electromagnetic energy signal, these high frequency pulsed radio waves which travel though the surface of the target location for two way travel time (send and receive) as the antenna is moved across the surface the difference in the dielectric properties of the substrate or target reflects these changes which are then reproduced on a computer screen for identification.
Westscan also uses advanced electromagnetic locating equipment to locate and detect magnetic fields which are known as a signal.
Passive signals are signals which occur naturally from power or radio waves and Active signals are signals which are induced or directly connected by a portable generating transmitter to the target line.
Electromagnetic locating equipment is also used to locate non-metallic lines with the use on a transmitting sonde. A transmitting sonde is a small circular vessel which contains a magnetic field generator.