그룹 피드

Ground Penetrating Radar (GPR) is a non-destructive geophysical method that uses electromagnetic (EM) radio wave pulses to image and detect subsurface structures, objects, and anomalies within materials like soil, rock, concrete, and pavement.

Working Principle

1. Transmission: A GPR system's transmitter antenna emits high-frequency radio waves (typically 10 MHz to 2.6 GHz) into the ground or material being scanned.

2. Reflection: As the wave travels, it encounters boundaries between different materials (e.g., soil and a pipe, or concrete and rebar). A significant portion of the energy is reflected back to the surface when there is a contrast in the materials' dielectric permittivity (a measure of how well a material transmits EM energy).

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