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Kriging as a means of improving WAAS availability

Show simple item record Sparks, Lawrence Blanch, Juan Pandya, Nitin 2014-09-24T23:37:22Z 2014-09-24T23:37:22Z 2010-09-21
dc.identifier.citation ION GNSS-2010, Portland, Oregon, September 21-24, 2010 en_US
dc.identifier.clearanceno 10-4427
dc.description.abstract The Wide Area Augmentation System (WAAS), an augmentation of the Global Positioning System (GPS), provides safe and reliable use of GPS signals for airline navigation over much of North America. Currently the largest source of positioning error in the system is signal delay caused by the ionosphere. To allow the user to take account of such error, WAAS computes and broadcasts ionospheric vertical delays at a set of regularly-spaced grid points. In addition, WAAS computes and broadcasts a safety-critical integrity bound at each ionospheric grid point (IGP) called the Grid Ionospheric Vertical Error (GIVE). GIVEs are constructed to be sufficiently large to protect the user against positioning error due to the presence of ionospheric irregularity. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject Ionosphere en_US
dc.subject GPS en_US
dc.title Kriging as a means of improving WAAS availability en_US
dc.type Preprint en_US

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