this post was submitted on 18 Mar 2025
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Canada to partner with Australia on early warning detection system in the Arctic (www.cbc.ca)
submitted 15 hours ago by [email protected] to c/[email protected]
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[–] xzot746 6 points 15 hours ago (3 children)

Not sure how I see this as a benefit to Australia, unless they are looking at it the same way the Chinese were, if they invest in the Arctic even in Canada then they have a stake in the Northern Passage discussions, even though their border doesn't actually touch the Arctic.

[–] [email protected] 5 points 7 hours ago* (last edited 6 hours ago) (1 children)

Australia has been running over the horizon radar for decades, I think Australia's role in this is providing expertise

From over-the-horizon radar on Wikipedia

Another early shortwave OTH system was built in Australia in the early 1960s. This consisted of several antennas positioned four wavelengths apart, allowing the system to use phase-shift beamforming to steer the direction of sensitivity and adjust it to cover Singapore, Calcutta, and the UK. This system consumed 25 miles (40 km) of electrical cable in the antenna array.[7]

Note that the UK is approximately antipodal to Australia

Australia's current OTH radars covers South East Asia, use half the transmit power of US OTH radar, and have longer range

[–] xzot746 1 points 4 hours ago (1 children)

Ok that makes sense. Thanks for the information.

[–] [email protected] 2 points 2 hours ago* (last edited 2 hours ago)

I just found this: https://www.abc.net.au/news/2025-03-19/canada-snuck-past-trump-buy-jorn-defence-radar/105069292

TLDR: Australia wanted to sell our Jindalee over-the-horizon radar (JORN) to the US, then Trump happened, so now we're selling it to Canada

[–] [email protected] 9 points 14 hours ago (1 children)

I would assume Australia would use it to monitor their own seas, rather than the Arctic. They already have a system that watches the sea north of Australia ( https://en.wikipedia.org/wiki/Jindalee_Operational_Radar_Network ), so they have proven experience in the field

[–] [email protected] 6 points 12 hours ago

They already have a system that watches the sea north of Australia

Okay, that makes sense, and it squares with the CBC article:

Carney acknowledged that the project is not new, but said the partnership with Australia will allow it to be built and deployed "as quickly as possible and as effectively as possible."

We're basically teaming up with an ally that has experience getting the job done. Sensible.

[–] [email protected] 5 points 14 hours ago

There is that. They could also be wanting to implement their own system and helping us update ours is a great way to avoid problems of their own, if the do build one.