Geophex - Model GEM-5 - Array Vehicle-Mounted or Vehicle-Towed Gradiometer Sensor - Brochure

The GEM-5 array is a vehicle-mounted or vehicle-towed gradiometer sensor for rapid ground coverage. It has a transmitter in the middle straddled by two identical receiver coils below and above. The difference between the two receiver coils constitutes the signal. The gradiometer configuration has the following advantages: