Precise detection of unexploded ordnance at greater depths

Magnetometers are passive measuring devices that register the disturbances in the Earth's magnetic field caused by ferromagnetic objects in the ground. Evaluation of these ‘magnetic anomalies’ enables precise location even of deeply buried unexploded ordnance: The depth range of magnetometers is considerably broader than that of active metal detectors.

DETECTION & GEOPHYSICS - Making the hidden visible