Patents by Inventor Gan-Tai Tseng

Gan-Tai Tseng 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).

  • Switched combiner GPS receiver system
    Patent number: 7663548
    Abstract: A receiving system includes a combiner configured to receive signals from two or more antenna elements and to generate sum and difference outputs, and a switch configured to sequentially provide the sum and difference outputs as inputs to a receiver.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: February 16, 2010
    Assignee: The Aerospace Corporation
    Inventors: James P. McKay, Gan-Tai Tseng
  • Switched Combiner GPS Receiver System
    Publication number: 20070222680
    Abstract: A receiving system includes a combiner configured to receive signals from two or more antenna elements and to generate sum and difference outputs, and a switch configured to sequentially provide the sum and difference outputs as inputs to a receiver.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 27, 2007
    Inventors: James McKay, Gan-Tai Tseng
  • Method and system using a GPS-based phased-array scheme for three-axis attitude determination
    Patent number: 6906664
    Abstract: A method and system for determining three-axis attitude from line-of-sight (LOS) solutions for two or more GPS satellites uses intersections of null cone patterns and LOS vectors to the GPS satellites. In a preferred embodiment, a unified GPS-based sensor also provides navigation information.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: June 14, 2005
    Assignee: The Aerospace Corporation
    Inventors: Gan-Tai Tseng, Philip Roger Dahl, Shih-Chieh Leung, James Chun-Hsiang Liau, Jo-Lien Yang, Michael Shigeru Yonezaki
  • Method and system using a GPS-based phased-array scheme for three-axis attitude determination
    Publication number: 20030048221
    Abstract: A method and system for determining three-axis attitude from line-of-sight (LOS) solutions for two or more GPS satellites uses intersections of null cone patterns and LOS vectors to the GPS satellites. In a preferred embodiment, a unified GPS-based sensor also provides navigation information.
    Type: Application
    Filed: October 8, 2002
    Publication date: March 13, 2003
    Inventors: Gan-Tai Tseng, Philip Roger Dahl, Shih-Chieh Leung, James Chun-Hsiang Liau, Jo-Lien Yang, Michael Shigeru Yonezaki
  • GPS patch antenna attitude reference system
    Patent number: 6459406
    Abstract: A pair of patch antennas are used to form a null slit antenna pattern for receiving GPS signals from at least three GPS satellites functioning as pseudo stars for spin rate and spin axis attitude determination for a spinning space vehicle in an earth orbit below the GPS satellites.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: October 1, 2002
    Assignee: The Aerospace Corporation
    Inventors: Gan-Tai Tseng, Jo-Lien Yang, Steven Lloyd Johns, Cheng A. Wu
  • GPS patch antenna attitude reference method
    Patent number: 6452543
    Abstract: A null slit antenna pattern receives GPS signals from at least three GPS satellites functioning as pseudo stars for spin rate and spin axis attitude determination of a spinning space vehicle in an earth orbit below the GPS satellites.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: September 17, 2002
    Assignee: Aerospace Corporation
    Inventors: Gan-Tai Tseng, Jo-Lien Yang, Steven Lloyd Johns, Cheng A. Wu