Receiver with seamless correction capacity
August 18, 2017. 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 ReferencesNetworked differential GPS system GPS and satelite navigation system Differential GPS smart antenna device Integrity monitoring of location and velocity coordinates from differential satellite positioning systems signals Method and apparatus to improve overall performance of a DGPS receiver Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control Carrier phase differential GPS corrections network Patent #: 5899957 InventorAssigneeApplicationNo. 914907 filed on 08/18/1997US Classes:701/215, Having multiple GPS antennas or receivers (e.g., differential GPS)342/357.03, Using differential correction342/358, With satellite signal correction701/213Using Global Positioning System (GPS)ExaminersPrimary: Chin, GaryAttorney, Agent or FirmInternational ClassG01S 005/02AbstractA system and method for determining which of a plurality of correction signals is to be used in a position determination system for determining position. An antenna receives broadcasts of correction data on designated frequencies. The received correction data is analyzed to determine the best correction data signal to use to accurately determine position. The correction data from the selected best source of correction data is coupled to a position determination system for accurate determination of position. Thus, the present invention provides a seamless correction system that determines the best source of correction data from available sources and uses the selected correction data to determine location. The seamless correction system updates the source of correction data automatically. Thus, the user does not have to take the time and effort necessary to determine the location, frequency and format of correction signals broadcast in each area and the user does not have to change frequencies or change equipment to obtain accurate position determination.Field of SearchNAVIGATIONEmploying position determining equipment Using Global Positioning System (GPS) Means to improve accuracy of position or location Having multiple GPS antennas or receivers (e.g., differential GPS) With position indicating Using differential correction Using Global Positioning Satellite (GPS or Glonass) GPS receiver signal processing With storage device (i.e., map or database) With satellite signal correction | |
