Patents by Inventor Hengquin Wen

Hengquin Wen 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).

  • Navigation system using locally augmented GPS
    Patent number: 7164383
    Abstract: A local area augmentation navigation system for determining the location of an object using differential GPS. The system does not require any significant power or communication infrastructure. The system includes at least three reference stations, a master station and a LAAS receiver. The at least three reference stations are located in close proximity to each other and at known locations. Each of the reference stations receive a GPS signal from a GPS constellation and collect and output via a wireless transceiver the pseudo-range data from the GPS signal. The master station is positioned in close proximity to the reference stations and receives the pseudo-range data from the reference stations. The master station forms a correction message from the pseudo-range data and the known locations of the reference stations. The master station broadcasts the correction message within a specified area.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: January 16, 2007
    Assignee: The Board of Regents of the University of Oklahoma
    Inventors: John E. Fagan, Hengquin Wen, Rick Pendergraft
  • Navigation system using locally augmented GPS
    Publication number: 20040119638
    Abstract: A local area augmentation navigation system for determining the location of an object using differential GPS. The system does not require any significant power or communication infrastructure. The system includes at least three reference stations, a master station and a LAAS receiver. The at least three reference stations are located in close proximity to each other and at known locations. Each of the reference stations receive a GPS signal from a GPS constellation and collect and output via a wireless transceiver the pseudo-range data from the GPS signal. The master station is positioned in close proximity to the reference stations and receives the pseudo-range data from the reference stations. The master station forms a correction message from the pseudo-range data and the known locations of the reference stations. The master station broadcasts the correction message within a specified area.
    Type: Application
    Filed: September 24, 2003
    Publication date: June 24, 2004
    Inventors: John E. Fagan, Hengquin Wen, Rick Pendergraft