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 ?
Krolik, "Robust altitude estimation for over-the-horizon radar using a state-space multipath fading model," IEEE Transactions on Aerospace and Electronic Systems, vol.
This includes aircraft, UAVs, fishing boats, and over-the-horizon radar for ocean surveillance and targeting.
The Asian power is also reportedly procuring a variety of new space systems, airborne-early-warning aircraft, long-range UAVs, and an over-the-horizon radar to enhance its ability to detect, monitor, and target naval activity in the Western Pacific.
employs Relocatable Over-the-Horizon Radar (ROTHR) systems in Texas, Virginia, and Puerto Rico to provide wide-area detection and surveillance of air targets throughout the region.
The Navy is also building a giant over-the-horizon radar installation on Vieques, allegedly part of the U.S.
Because of the black budget status of the Stealth technology, Pentagon officials can neither sing its praises nor openly deny published reports that the Stealth bomber already is outdated because its heralded radar-evading ability has been outstripped by advances in over-the-horizon radar technology.
The project is divided into two parts and encompasses the design, build, installation and operation of electronics for two polar over-the-horizon radar sites, according to the Department of National Defence.
Raytheon has won $45 million contract for fully integrated replacement shelters for transmit array, transmit site monitors and receive site monitors for the Re-locatable Over-the-Horizon Radar system (ROTHR).
Wu, "Ionospheric effect of HF surface wave over-the-horizon radar," Radio Science, vol.
Relocatable Over-the-Horizon Radar. ROTHR is a land-based Navy operated system that bounces high-frequency signals off the ionosphere.
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.S.-built rockets fired out to sea from the northwest coast of Western Australia, the Herald said.
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