Patents by Inventor Gaylin David Brenchley

Gaylin David Brenchley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for maintaining the integrity of spacecraft based time and position using GPS
    Patent number: 6134484
    Abstract: A method and apparatus for maintaining the integrity of spacecraft based time and position using GPS (11) is disclosed. A GPS receiver is provided with a Receiver Autonomous Integrity Monitor (RAIM) processor (12) and a Kalman filter (14). GPS signals are received from at least four GPS satellites and processed in the GPS receiver to provide time and position information. Periodically, an extended fault vector is formed in the Kalman filter with propagated open-loop position and velocity measurements. The extended fault vector is used to isolate and remove failing GPS satellites.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: October 17, 2000
    Assignee: Motorola, Inc.
    Inventors: George Jeffrey Geier, Roger Charles Hart, Gaylin David Brenchley