US Patent 10459105 Airborne locator of an underground object

A system for locating an underground line. The system uses a self-propelled autonomous antenna, processor and propulsion system. The antenna detects a magnetic field from an underground line and generates an antenna signal. The processor is programmed to receive the antenna signal and generate a command signal. The propulsion system receives the command signal and moves the antenna along a length of the underground line, allowing the processor to map the same.