Drill head for underground drilling, drilling device for underground drilling with drill head, method of detecting object during underground drilling, and signal as detection of object during underground drilling Using a direct digital synthesizer

摘要

A drill head for earth boring, in particular for a horizontal drilling device, includes a housing, a transmitter for generating a radio signal, an antenna and a receiver for receiving a reflected radio signal, wherein the transmitter which is adapted to generate the radio signal includes a direct digital synthesizer.