US 12,111,391 B1
Positional accuracy using ground penetrating radar
David Cist, Winchester, MA (US)
Assigned to GEOPHYSICAL SURVEY SYSTEMS, INC., Salem, NH (US)
Filed by Geophysical Survey Systems, Inc., Nashua, MA (US)
Filed on Jun. 20, 2022, as Appl. No. 17/844,211.
Claims priority of provisional application 63/227,452, filed on Jul. 30, 2021.
Int. Cl. G01S 13/88 (2006.01)
CPC G01S 13/885 (2013.01) 20 Claims
OG exemplary drawing
 
1. A position locating device comprising:
a ground penetrating radar transceiver; and
a location determining system;
wherein said device is configured such that a first detection, by way of said ground penetrating radar transceiver, of a first subsurface object at, at least, two different points, said two different points extending in a direction other than a path of travel of said position locating device during said first detection, is used to correct a pose of said position locating device relative to said first subsurface object based on an assumed or determined linear extent of said subsurface object.