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