What Indicative Information of a Subsurface Wetted Body Can Be Detected by a Ground-Penetrating Radar (GPR)? A Laboratory Study and Numerical Simulation

Nondestructive and noninvasive visualization quantification of soil wetted bodies (SWBs) is great significance to the development water-saving agriculture. Unfortunately, measuring parameters SWBs difficult due invisibility buried underneath ground non-variability moisture under partial irrigation conditions. Therefore, we performed a laboratory experiment investigate what SWB attributes can be detected by GPR. In laboratory, three typical experiments were conducted collect GPR data different sizes, shapes, burial depths. Additionally, numerical simulation scenarios designed according experiment. Then, simulated measured processed FK migration method. Based on simulation, calibration model for width was constructed. We found that attributes, such as type location obtained from raw radargrams owing obvious reflection top bottom interfaces. The results showed estimating depth thickness more reliable than radargrams. Moreover, estimation relies Our findings indicate size dominate detection accuracy, estimated gained via improved. highlight potential using detect SWBs, well migration, modeling in combination extract information