Yes. ASTM has published the standard ASTMD6432–19, as a guide for using GPR for subsurface investigation. You can get more info here

Yes. ASTM has published the standard ASTMD6432–19, as a guide for using GPR for subsurface investigation. You can get more info here https://www.astm.org/Standards/D6432.htm There are several other standards related to specific applications of GPR.