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NSTB WAAS Precision Approach Trials
Conducted by the WADGPS Laboratory
in
Juneau, Alaska
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Stanford's Wide Area Differential GPS (WADGPS) Laboratory conducted experimental WAAS Precision
Approaches at the Juneau, Alaska International Airport in August of 1998. The testing included
flight trials, collection of WAAS precision approach performance data, and capture of production
in-flight video footage.
This flight test was sponsored by the Federal Aviation Administration (FAA) in particular the
Satellite Navigation Program Office under AND-700. We
extend our thanks to them for supporting GPS research here at Stanford. We would also like to
acknowledge the FAA Technical Center's efforts with regard to maintaining the National Satellite
Test Bed (NSTB).
Our flight platform was a Beechcraft Queenair with navigation,
attitude, and tunnel-in-the-sky-over-terrain display payloads. Each of these payloads was developed
as a PhD research project here in the GPS Laboratory
at Stanford.
The primary WAAS data link for these flight tests was the Inmarsat 3 Pacific Ocean Region (POR)
geosynchronous satellite broadcasting Stanford's 250 bps WAAS correction stream. As a secondary data
link the WADGPS Lab had a direct modem link to our portable ground based VHF transceiver. Follow
the links below for more detail on each project/payload. Checkout our
photo gallery, as well as our videos (Quicktime required);
merge in/out of computer generated display and nose-mounted camera,
side-by-side of computer generated display and nose-mounted camera.
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