![]() Posted in Arduino Hacks Tagged antenna, antipodal vivaldi, arduino, GPR, ground penetrating, Mega 2560, radar Post navigation made all of the hardware and software open-source for this project, and if you’d like to see another take on GPR then head over to this project which involves a lot of technical discussion on how it works. This can be very handy when starting a large excavation project, detecting rock layers or underground utilities before digging. Using this tool allows you to see different densities of materials located underground, as well as their depths. It operates at a frequency range from 323 MHz to 910 MHz, and a small graph of what it “sees” is displayed on an LCD screen that is paired to the Arduino. A switch attached to the wheels triggers the radar at regular intervals as it rolls, and the radar emits a signal and listens to reflections at each point. Everything is mounted into a small cart that can be rolled along the ground. This is a project from who built the system around a Arduino Mega 2560 and antipodal Vivaldi antennas, a type of directional antenna. This technology can also be built with a few common items now for a relatively small cost. ![]() Ground-penetrating radar (GPR) is a tool that sends signals into the earth and measures their return to make determinations about what’s buried underground in much the same way that distant aircraft can be located or identified by looking for radar reflections. While you might think of radar pointing toward the skies, applications for radar have found their way underground as well. ![]()
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