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Jindalee Oth Radar Essay

1437 words - 6 pages

Jindalee Operational Radar Network (JORN)The Jindalee Operational Radar Network (JORN) is an over the horizon radar network. It is used to monitor sea and air movements within a 37,000 km² area. Within the network lie three over-the-horizon-radar systems, all focused on the protection of Australia.HISTORYThe origins for this network go all the way back to post World War II in which Australia and the United States conducted research into the ionosphere. Experiments related to the research were done up to the 1970s in which a study undertaken resulted in a proposal for a program. The program was to be carried out in 3 phases:Geebung - This aspect of the project aimed to define operational requirements and study appropriate techniques & technologies for an over-the-horizon-radar.Jindalee - Probably the most important part of the project, in relation to its success, the Jindalee phase intended to prove the feasibility of the whole proposal as well as provide accurate costings of the over-the-horizon-radar system. Three stages where implemented to aid the Jindalee project.Stage A involved the construction of a prototype radar receiver located at Mount Everard, Northern Territory as well as a transmitter 160km away. Through two years of performance (1976 - 1978), the concept of over-the-horizon-radar was proved feasible.Stage B involved the implementation of the knowledge gained from stage A, into an improved radar system. The new radar was placed next to its predecessor. Through its use, a ship was able to be detected and more importantly, an aircraft was automatically tracked in the February of 1984. Due to the systems major success it was put to trial with the Royal Australian Air Force.Stage C involved the conversion of the Stage B radar into an operational radar within the Australian Defence Force. And like the Stage A radar, the Stage B radar was upgraded substantiallyJORN - The purpose of this project was to design and construct the Jindalee Operational Radar Network (JORN) itself. This was to be completed in 1997, but due to issues surrounding the business side of the operation, an operational system was not delivered unto April of 2003.Over the years since its construction, JORN has had two upgrades keeping the running tally to approximately $1.8 billion.TODAYAt the present time, two operational radars stations exist within the network. One in Longreach, Queensland & one in Laverton, Western Australia. There is a control centre located at Edinburgh (South Australia) Royal Australian Air Force base.Research and testing is conducted by the Defence Science and Technology Organisation (DSTO) at a radar station located near Alice Springs, i.e. the original site for the JORN system.HOW IT WORKSAn over-the-horizon-radar system is designed to fundamentally see 'over the horizon'. Unlike the conventional microwave radars as seen in airports around the world that cannot detect objects further than their line of sight and only circulate in a...

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