Sydney Airport to get CAT I GPS capability
Airservices Australia and Qantas are working with Honeywell at Sydney Airport to supplement the signals broadcast by global navigation satellite systems.

Airservices Australia and Qantas are working with Honeywell at Sydney Airport to supplement the signals broadcast by global navigation satellite systems. Those systems include the global positioning system that will provide the same level of precision approach guidance as a Category I instrument landing system–that is, to a height of 200 feet above the ground as long as visibility on the airport surface is adequate.

The ground-based augmentation system (GBAS), as it is known, monitors the GPS satellites’ signals, detects any errors resulting from ionospheric interference or other causes and broadcasts corrections. Suitably equipped aircraft can use the corrections to refine their own navigation solution, making it accurate and reliable enough to use for approach guidance.

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