U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Satellite position measurement system

Patent 6865484 Issued on March 8, 2005. Estimated Expiration Date: Icon_subject April 10, 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 References

Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control
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Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control
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Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control
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Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control
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Method for using external constraints to improve the speed and reliability of phase ambiguity resolution in real-time kinematic initialization
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Receiver with seamless correction capacity
Patent #: 6061632
Issued on: 05/09/2000
Inventor: Dreier

Method of collection and linking of positional data from satellite localization and other data
Patent #: 6233523
Issued on: 05/15/2001
Inventor: Sood

Method and system for providing wide area augmentation systems (WAAS) like corrections using a server and processor on the internet
Patent #: 6529830
Issued on: 03/04/2003
Inventor: Eschenbach

Global augmentation to global positioning system
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Issued on: 03/11/2003
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Method of determining the position of a mobile unit
Patent #: 6618671
Issued on: 09/09/2003
Inventor: Dooley ,   et al.

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Inventors

Assignee

Application

No. 10343916 filed on 04/10/2002

US Classes:

701/213, Using Global Positioning System (GPS)701/214, Means to improve accuracy of position or location701/215, Having multiple GPS antennas or receivers (e.g., differential GPS)342/357.02With accuracy enhancing

Examiners

Primary: Camby, Richard M.

Attorney, Agent or Firm

Foreign Patent References

  • 7-12918 JP 01/01/1995
  • 9-509489 JP 09/01/1997
  • 9-311177 JP 12/01/1997
  • 10-48321 JP 02/01/1998
  • 11-83976 JP 03/01/1999
  • WO 9522769 WO 08/01/1995

International Class

G01C021/26

Abstract

A GPS positioning system that has: at least one mobile station to measure a positional coordinate by receiving radio wave from a satellite; a plurality of fixed stations that have predetermined positional coordinates and receive radio wave from the satellite; and arithmetic processing means, which is connected with at least one mobile station and a plurality of fixed stations via communication, and that transmits correction data suitable for the mobile station to the mobile station based on positioning data transmitted from the mobile station.

Other References

  • U.S. Appl. No. 10/343,914, filed Feb. 6, 2003, inventor Miyasaka et al.
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