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The integrated multi‐frequency GPR OKO‐3 is designed for automated location of features at different depths, simultaneously and in real time. This GPR combines a control unit and two antennas with different frequencies. An antenna with dual frequencies of 300 and 900 MHz provides GPR data at depths of 7 and 2.5 meters simultaneously. The resolution is 0.2 and 0.8 meters.

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