Hudson Bay ADS-B deployment
In the mid-2000s the company decided to address the lack of radar coverage in the Canadian north, especially in the area of
Hudson Bay where airliners transition from the
North Atlantic Tracks system to
Canadian Domestic Airspace by deploying a ground-based
Automatic Dependent Surveillance-Broadcast (ADS-B) network. The five station network was operational on 15 January 2009, filling a 850,000 km2 (330,000 sq mi) gap in radar coverage which allowed reduced separation of airline flights by ADS-B tracking over procedural separation. In January 2009, Nav Canada estimated that the ADS-B system would save its customers 18 million litres of fuel per year and reduce CO
=left2 and equivalent emissions by 50,000 t (110,000,000 lb) per year.
[7][20][21]In November 2010, a second set of six ground-based ADS-B transceivers was later deployed along the coast of
Labrador and
Nunavut, providing an additional 1,980,000 km2 (760,000 sq mi). In March 2012 four more stations were added in
Greenland, increasing the area covered by 1,320,000 km2 (510,000 sq mi).
[7]