The Jindalee Operational Radar Network (JORN) is an over-the-horizon radar network that can monitor air and sea movements across 37,000 km2. It has an official range of 3,000 km. It is used in the defence of Australia and can also monitor maritime operations, wave heights and wind directions. Up to now, the network has cost approximately A$1.8 billion.
Read more about Jindalee Operational Radar Network: History, Network, Operation and Uses
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