Called Project Crossbow, the plan involves using Hercules aircraft and Chinook helicopters to airlift passive sensor installations, which resemble large shipping containers that stand on metal legs.

The initial deployments could begin as soon as next summer with initial operating capability coming online in 2029, said Royal Canadian Air Force spokesperson Lt.-Cmdr. Melanie Aqiqi.

…

The container stations will run on solar and wind power, according to a series of National Defence documents filed with a Nunavut regulatory board.

More info about Project Crossbow *there is not a lot of info about it, it is a classified project between US and Canada which is a valid line of criticism but we are talking about the details of nuclear ballistic missile defense here.

https://defensescoop.com/2023/02/09/us-canada-developing-secretive-crossbow-sensor-network-as-concerns-mount-over-chinese-balloon-fleet/

https://www.espritdecorps.ca/feature/new-projects-to-help-canadian-forces-protect-the-arctic

https://www.canada.ca/en/department-national-defence/services/operations/allies-partners/norad/norad-modernization-project-timelines.html

I am going to hazard a guess and say that Project Crossbow was named as an allusion to Operation Crossbow.

https://en.wikipedia.org/wiki/Operation_Crossbow

Crossbow was the code name in World War II for Anglo-American operations against the German long range reprisal weapons (V-weapons) programme. The primary V-weapons were the V-1 flying bomb and V-2 rocket, which were launched against Britain from 1944 to 1945 and used against continental European targets as well.[3]

This may suggest this aspect of the defense sensor network is focused on detecting mass flying bomb attacks, but that is a total guess off the name given that this is all classified.