over-the-horizon radar


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over-the-horizon radar

[′ō·vərthə hə′rīz·ən ′rā‚där]
(electromagnetism)
Long-range radar in which the transmitted and reflected beams are bounced off the ionosphere layers to achieve ranges far beyond line of sight.

over-the-horizon radar

over-the-horizon radar
Principle of over-the-horizon radar.
A radar system that makes use of the atmospheric reflection and refraction phenomena to extend its range of detection beyond the line of sight. Targets can be detected by over-the-horizon radar thousands of miles away. Over-the-horizon radars may be either forward-scatter or back-scatter systems.
References in periodicals archive ?
Not to be left behind by the "Colonies", the UK has decided to collaborate with the US on a two-year joint trial of the Navy's over-the-horizon radar in the UK.
Australia completed another phase of its plan to build a network of over-the-horizon radars (OTHR) when it opened newly-completed facilities recently at the Alice Springs Mt.
According to the Australian Department of Defence (DoD), the 10 years agreement includes predictive logistics technologies, Lockheed Martin s Aegis combat system, over-the-horizon radar, hypersonics and operational analysis.
The system receives surveillance data from many different sources, including the over-the-horizon radar system, civil and military air traffic agencies, and military surveillance radars.
Nor is China our only potential naval adversary, and with aircraft, surface-to-surface missiles, and over-the-horizon radars the littoral countries need not have navies to assert themselves over millions of square miles of sea.
The Aqua Marine provides detection of over-the-horizon radars, instantaneous 360[degrees] direction finding, automatic emitter identification, library generation and editing, fast threat warning and a host of other features.
showed interest in Australia's over-the-horizon radars, the Jindalee Operational Radar Network (JORN), which can be used to detect missiles, he said.
Both types of awareness can be achieved by various means, including space-based national sensors, maritime patrol aircraft (MPA), unmanned aerial vehicles, shore-based over-the-horizon radars, all-source intelligence, data links between netted forces, and shipboard sensors such as air- and surface-search radars and passive electronic surveillance systems.
On a smaller scale, the Wisconsin and Michigan-based PAVE PAWS, the largest over-the-horizon radars in the U.
A new interest in over-the-horizon radars is growing, but most programs are still without production plans.
At the heart of SOUTHCOM's surveillance capability is the Andean Ridge counterdrug network, an integrated system of US Air Force AWACS aircraft, ground-based radars and relocatable over-the-horizon radars which monitor the "narcotics air bridges" within Latin America and between South America and the US.

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