U.S. Patent Issued to Natural Resources Canada's Geodetic Survey Division for GPS Invention
November 17, 2011News courtesy of CANSPACE Listserv.
Natural Resources Canada’s Geodetic Survey Division (GSD) was awarded a U.S. patent for an invention that could "significantly improve the precision of GPS positioning by facilitating the resolution of integer cycles of un-differenced carrier phase signals," according to GSD. "This capability, currently available only for users operating pairs or networks of GPS receivers, could now become available to every single user. This has significant impact on the logistics and cost of conducting high-precision GPS surveys."
The invention, "Decoupled Clock Model with Ambiguity Datum Fixing," U.S. Patent 8,018,377, could lead to almost instantaneous positioning with centimeter precision anywhere on Earth, which now can only be achieved over local to regional areas.
The decoupled clock model was first presented at The Institute of Navigation (ION) National Technical Meeting in January 2008, then at ION GNSS International Technical Meeting in September 2008, and published in Navigation: The Journal of the Institute of Navigation in 2010 (Vol.57,No.2). This new development may have significant implications for the study of Earth processes over large areas, in particular the detection and monitoring of crustal dynamics and water level changes.
For more information about this patent, contact Natural Resources Canada’s Geodetic Survey Division Client Service at information@geod.nrcan.gc.ca or consult the U.S. Patent office.
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