I can provide a GPR free of charge if for academic research
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An Archaeologist’s Guide to Headache-free GPR

Developed in the 1970’s, Ground Penetrating Radar (GPR) uses radio waves to detect and map underground objects and soil/rock strata. In the last three decades archaeologists have made extensive use of the technology. It allows them to detect, map and analyze archaeological remains without putting a shovel into the ground.

How it works

The science behind GPR is complex and has been the source of plenty of headaches for archaeology students. A very basic explanation of the technology works like this:

The antenna of a GPR system shoots radio pulses into the ground. Each pulse travels through the ground as a wave.

Within the ground there are different layers of subsurface materials (soils, rocks and, hopefully, archaeological remains).

Every time this wave comes in contact with a new layer of soil or debris, the velocity of the wave changes. This causes some of the energy of the wave to “bounce” back as a reflected wave.

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