This permits target detection at distances from about 500 to 2,000 nautical miles (900 to 3,700 km) . Thus, an HF over-the-horizon (OTH) radar can detect aircraft at distances up to 10 times that of a ground-based microwave air-surveillance radar, whose range is limited by the curvature of the Earth.
Read moreWhat is a radar signal frequency?
A RADAR signals frequency is: The number of waves sent out in one second . … If several vehicles are all “in range,” the RADAR unit will always pick out the speed of the vehicle that is.
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