over-the-horizon radar


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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.
References in periodicals archive ?
The ROTHR makes use of high-frequency radar waves which bounce off a layer of the atmosphere called the ionosphere to provide long-range over-the-horizon radar coverage.
The Air Force was using the parts to help operate over-the-horizon radar at its Ballistic Missile Early Warning System sites.
Contract Awarded for Shelters, monitors and support equipment for the Relocatable Over-the-Horizon Radar systems for the U.
Government commitments to Defence-wide programs include enhancement of the Jindalee Over-the-Horizon Radar Network (JORN), as well as improvements to data-fusion capabilities in order to integrate JORN data with information provided by other sensor.
The TMD experiments in Australia, code-named Project Dundee, which stands for Down Under Early Warning Experiment, have included using over-the-horizon radar in tracking U.
Little did he know that from 1000 miles away an advanced early-warning, over-the-horizon radar was watching his entire trip and relaying his position to government agents who were moving to intercept him.
National security: SRI has been meeting our nation's needs for mission-critical technologies, from over-the-horizon radar used during the Cold War, to GPS used in the Gulf War, to intelligence systems used in today's war against terrorism.
It will be a platform, consisting of 2 radar technologies, a novel Over-The-Horizon Radar combined with a Multiple Input Multiple Output one implemented exploiting the latest photonics advancements, and an Early Warning System exploiting deep and adaptable machine learning schemes able to Automatically detect radar Targets.
Many public controversies have arisen over the siting of RF transmission facilities, including over-the-horizon radar, satellite uplink dishes, weather radar, commercial broadcast facilities and, more recently, wireless communications base stations.
A June 16 news story notes how the airship could carry the same types of highly classified surveillance gear as satellites and unmanned reconnaissance aircraft such as high-resolution cameras, infrared sensors and over-the-horizon radar.
Navy's Naval Supply Systems Command (NAVSUP) Relocatable Over-the-Horizon Radar (ROTHR) program.
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