What fully polarimetric GPR means, in plain terms

Polarization, briefly

A radar antenna transmits a wave with an orientation, its polarization. A buried pipe reflects that wave best when the wave's orientation lines up with the pipe. Conventional GPR uses one polarization, so it sees a line clearly when the operator crosses it at a right angle and can miss a line that runs along the scan path or at a slant.

What fully polarimetric adds

A fully polarimetric radar transmits and receives in two orthogonal polarizations in the same sweep and records how the reflection changes between them. A long thin target, like a pipe or cable, changes the polarization in a way a rock or a lump of fill does not. So the radar sees a line whichever direction it runs, and it can tell linear targets apart from clutter.

Why that matters at the dig point

Crews do not scan in neat grids. They walk a dig path, and the lines underneath run every direction. A radar that sees in every orientation, and that separates pipes from rocks, gives a cleaner answer from one pass. In the GroundScope GSX1000 the machine learning model is trained on that polarimetric data, which is what lets it report detections to a crew with no radar training.

Built in house

GroundScope's radar, antenna and models were developed by its own team, with the fully polarimetric antenna developed alongside Dr. Chi-Chih Chen of The Ohio State University ElectroScience Laboratory. The work is covered by four issued U.S. patents, with more pending.