Ground penetration radar is cool device which allows you to see what is below earth surface. The principle is same as the radars which operates at air. They send pulses and sense the reflections of this pulses back. When the surface is not consistent you get reflections which allow you to “see” cavities of metals under the surface, some GPRs can scan as deep as hundred meters below the surface. This is ultimate tool for all treasure hunters, but also very useful if you want to see water and other fluids underground.
We spotted interesting post at our forum for GPR made by company from Plovdiv with LIME2.
The device looks very nice in the custom box they made:
The GPR has antenna and WIFi connection so you can connect and visualize the results with any device:
olimex 
Apr 08, 2017 @ 09:40:05
Wow, nice, it is not on.y for treasure hunting, but have geological usage, how deep this can scan?
Apr 21, 2017 @ 10:16:55
Thanks sem-geologist,
EGPR is universal Application Controller applicable in all GPR use cases including geology.
The depth depends on the GPR antenna used. Currently EGPR is compatible with Easydar antennas having options 7m with 500MHz and 10m with 300MHz antenna.
We are looking for other manufactures and antennas to support. Even more we are able to support more than one antenna simultaneously solving the problem with the big “blind” range of antennas with bigger penetration.
Apr 24, 2017 @ 11:01:39
While talking with our potential customers we found one uncovered GPR problem – the big “blind” range of antennas especially at bigger penetration.
For now this problem is solving with a few scans with different antennas having different central frequencies, maximal penetrating depths and “blind” ranges respectively. Unfortunately, this approach has many disadvantages like more time for multiple scans, difficulties at synchronization of independent data, bigger archives etc.
Our EGPR Application Controller is capable to capture data from many GPR antennas simultaneously and the software which can synchronize them at visualization effectively. That is why we start looking for an interest to extend our EGPR product in this new direction.
Any comments and recommendations are welcome.
Best regards
EGPR Team