Mobile Ground Penetrating Radar
Catsurveys has figured out how to synchronize large quantities of data generated by ground-penetrating radar to a moving geographic location (using corrected GNSS -- global navigation satellite system). It's employed to determine the location of undergound utilities.
The MGPR [mobile ground penetrating radar] uses a multitude of low and intermediate frequency antennas to boost the quality of data and its reliability. Double polarized antennas cover both longitudinal and transversal scans to create one of the clearest underground images available.
The speed of data collection means it can be used in normal traffic, and not just on isolated roads shown in the illustration.