Ground Penetrating Radar (GPR)
Ground Penetrating Radar (GPR)
Ground Penetrating Radar (GPR)
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<strong>Ground</strong> <strong>Penetrating</strong> <strong>Radar</strong> (<strong>GPR</strong>) IET-<strong>Radar</strong> 2013<br />
Pavement Inspection<br />
<strong>Radar</strong> Analysis of Asphalt and<br />
Base Course Thickness<br />
19<br />
20<br />
<strong>GPR</strong> system<br />
Application of <strong>GPR</strong><br />
Detection of Buried<br />
Objects<br />
•pipe, cable<br />
•Landmine<br />
Non Destructive Inspection<br />
(NDI)<br />
•Concrete<br />
•Construction<br />
•Tunnel<br />
•Pavement<br />
Environment<br />
•<strong>Ground</strong> water<br />
•Geology<br />
Agriculture<br />
•Irrigation monitoring<br />
Archaeology<br />
21<br />
22<br />
Feature of <strong>GPR</strong><br />
High speed, High resolution<br />
–On site subsurface imaging<br />
Metal +Nonmetal<br />
–Wide applications<br />
–High sensitivity to water<br />
–Detection of water<br />
2. <strong>GPR</strong> Principle<br />
• EM Wave propagation in Soil/Rock<br />
Wave Velocity<br />
c 3<br />
v 10 8 ( m/ s)<br />
<br />
r<br />
Wavelength<br />
v<br />
vT ( m)<br />
f<br />
r<br />
23<br />
24<br />
Motoyuki Sato (Tohoku University, Japan) 4
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