| JORN (Jindalee Operational Radar Network) is one of the most powerful and versatile air-defense radars in the world. Australian scientists and engineers designed and built
this unique, over the horizon, system using the technique of bouncing radar signals off the ionosphere. This gives the radar a range of over 3,000 kilometers.
Development began in the early 1990s. Costing over a billion dollars to build, it became operational in 2002. The key to the system is software that enables a weak return signal
to be accurately identified. Thus, even stealth aircraft can be spotted by JORN. Many of the systems capabilities are kept secret, but the United States has been working with
Australia to integrate JORN into a world-wide anti-ballistic missile defense system. Currently, JORN provides plenty of warning if hostile aircraft should approach Australia.
The system was designed to provide coverage for Australia’s northern coast, which is largely uninhabited, but also vulnerable to smugglers, illegal migrants, or armed invaders.
JORN can be reconfigured to search for ships as well, and has been used in this way to spot ships trying to bring in illegal migrants.
The Jindalee Operational Radar Network (JORN) consists of two OTHR, one near Longreach, Queensland. and the other near Laverton, Western Australia, jointly operated from
the JORN Coordination Centre (JCC) at RAAF Base Edinburgh.
The radars are an advanced development of the Australian designed Jindalee radar at Alice Receiver Site, Laverton in Western Australia.
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