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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Frazer, "High-resolution time-frequency distributions for manoeuvring target detection in over-the-horizon radars," IEE Proceedings: Radar, Sonar and Navigation, vol.
One system, the relocatable over-the-horizon radar (ROTHR), has been able to change its focus as well and become a key sensor in supporting this new mission.
Yeo, "Transient interference excision in over-the-horizon radar using adaptive time-frequency analysis," IEEE Transactions on Geoscience and Remote Sensing, vol.
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 Completes New Phase of Its Over-the-Horizon Radar Network
However, if one wished to connect to an over-the-horizon radar simulator to see its influence on the combat, it would need heading and other information from aircraft halfway around the simulated world.

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