Jindalee Operational Radar Network: New Growth from Old Roots

The Jindalee Operational Radar Network (JORN) is a network of three over-the-horizon radars providing wide area surveillance to the north of Australia at ranges of 1000 to 3000 km. JORN plays a vital role in supporting the Australian Defence Force's air and maritime operations, border protection, disaster relief and search and rescue operations. JORN is currently undergoing a mid-life upgrade known as Defence Project AIR2025 Phase 6, which is intended to extend the operational life of JORN to beyond 2040. This paper provides a brief description of the genesis and evolution of JORN, and a description of the technologies being incorporated into the radar through the JORN Phase 6 project.