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◇ Environmental
◇ Military
◇ Teaching / Research and Development
◇ Archaeology
◇ Farming and Precision Agriculture
◇ Forensic Science
◇ Geological and Geophysical Applications
◇ Golf Course Management
◇ Hydrogeological Applications
◇ Mining and Mineral Exploration
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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:
◇ Vertical directional response, not affected by targets to the side, ideal for vehicle mounting
◇ Immunity to noise induced by sensor motion
◇ Immunity to ambient environmental EM noise
◇ Immunities provide improved signal-to-noise ratio (SNR)
The array has the following advantages:
◇ Maximum possible transmitter moment for a given array size
◇ Broadband, up to 10 frequencies between 30Hz - 93kHz
◇ Multiple receiver channels operating simultaneously;
◇ High-speed survey with high data density
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◇ Bandwidth: 30 Hz to 93 kHz
◇ Frequency Domain: Single frequency or Multiple frequencies
◇ Typical sampling rate: 30 Hz
