Geophysical Survey Systems, Inc. GPR Ground Penetrating Radar Utility Scan Manual Utility Scan Quick Start Guide What is Ground Penetrating Radar? Ground Penetrating Radar (GPR), also called georadar or ground probing radar. GPR uses three main components: a control unit, an antenna, and a power supply. GSSI GPR systems can operate on various power sources, including small rechargeable batteries, vehicle batteries, or standard 110/220-volt outlets, with connectors and adapters available for each. The featured unit can run on an internal rechargeable battery or external power.