GPR uses radar principles to image,
locate and quantitatively identify changes in electromagnetic properties under the
ground. A GPR may operator from
the earth's surface, from an aircraft or satellite or in
boreholes.
Information that can be obtained from GPR includes the depth, orientation, size and shape of buried
objects, and the density and water content of soils.
Ground penetrating
radar is also known as earth sounding
radar, ground probing radar, subsurface radar, or georadar.