In general, the available depth of this method is 15 ft (ASCE 2002). The pipe and cable locator ... Microwave pulses are transmitted into the ground from an antenna, and any incoming reflections are monitored at the receiver and passed on to a computer to depict a continuous graphic profile of the subsurface strata. Reflecting surfaces appear ... survey is highly site specific and is limited by signal attenuation, which is dependent on the electrical conductivity of the subsurface materials.
|Title||:||Subsurface utility engineering manual|
|Author||:||Sunil K. Sinha, Pennsylvania. Dept. of Transportation. Bureau of Planning and Research, Mid-Atlantic Universities Transportation Center, Pennsylvania Transportation Institute|