Government of Australia Archives - SpaceQ Media Inc.

Illustration of the process through which the Arctic Over-the-Horizon Radar (A-OTHR) reflects radio waves to observe targets up to 3000 km away. The transmit beam travels from Earth, reflects off the ionosphere, and reaches a target area within the 'Illumination region.' The receive beam returns from the target via the ionosphere. The ionosphere is a curved layer above Earth.

Canada, Australia ink Arctic over-the-horizon radar partnership arrangement

by Elizabeth Howell July 21, 2025July 21, 2025

Canada’s advanced Arctic over-the-horizon radar (A-OTHR) technology work with Australia advanced last month with a technology partnership arrangement between the two countries.

DSTO (Defence Science and Technology Group) research supports enhancements to the Jindalee Operational Radar Network (JORN), which provides 24 hour surveillance of Australia’s northern approaches, monitoring air and sea movements by using over-the-horizon technology.

Canada, Australia partner on over-the-horizon radar technology

by Elizabeth Howell March 19, 2025March 19, 2025