Definitions for over-the-horizon radar

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Freebase

  1. Over-the-horizon radar

    Over-the-horizon radar, or OTH, is a type of radar system with the ability to detect targets at very long ranges, typically up to thousands of kilometres. Several OTH radar systems were deployed starting in the 1950s and 60s as part of early warning radar systems, but these have generally been replaced by airborne early warning systems instead. OTH radars have recently been making something of a comeback, as the need for accurate long-range tracking becomes less important with the ending of the Cold War, and less-expensive ground based radars are once again being looked at for roles such as maritime reconnaissance and drug enforcement.

Dictionary of Military and Associated Terms

  1. over-the-horizon radar

    A radar system that makes use of the atmospheric reflection and refraction phenomena to extend its range of detection beyond line of sight. Over-the-horizon radars may be either forward scatter or back scatter systems.

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