Space based augmentation systems and methods using ionospheric bounding data to determine geographical correction source
March 13, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesApparatus for determining mark position on wafer Wide augmentation system retrofit receiver Satellite radiodetermination 6307505 Global positioning system receiver for monitoring the satellite transmissions and for reducing the effects of multipath error Portable map display system for presenting a 3D map image and method thereof Method and system for GPS and WAAS carrier phase measurements for relative positioning Patent #: 6469663 InventorsAssigneeApplicationNo. 10/099074 filed on 03/13/2002US Classes:701/214, Means to improve accuracy of position or location340/992, Position indication transmitted at periodic intervals (e.g., distance travelled)701/213Using Global Positioning System (GPS)ExaminersPrimary: Beaulieu, YonelAssistant: Hernandez, Olga Attorney, Agent or FirmInternational ClassesG01S 1/00 (20060101)G01S 5/00 (20060101) AbstractSystems, devices and methods are provided improving the accuracy, availability and integrity of GPS service. Specifically, the present invention provides a GPS device with the correction messages which are from the most accurate and desirable source while at the same time conserving processor and memory resources of the device. The method includes receiving GPS data. An SBAS signal from a first correction source is received. Ionospheric mask messages, for a number of grid points, in the received SBAS signal are analyzed. An abbreviated bounding region around a group of similar type grid points is constructed. The method further includes determining whether the position of the GPS device is within the abbreviated bounding region. | |
