Patents by Inventor Chao-Han Liu

Chao-Han Liu 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).

  • Patent number: 7744037
    Abstract: A calculating method for deducing all possible scenarios of satellite members and possibilities thereof in a low earth orbiting (LEO) satellite constellation is described, which is achieved mainly by relying on the spherical geometry analysis and probabilities and statistics technologies, in an attempt to rapidly and precisely obtain the concerned scenarios and possibilities thereof observed on the earth ground. With any user-defined orbital parameters and a position of an observation station for the scenarios on the earth ground inputted, all the possible scenarios and possibilities thereof can be obtained with the calculating method.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: June 29, 2010
    Assignee: National Defense University
    Inventors: Sheng-Yi Li, Chao-Han Liu
  • Publication number: 20080251645
    Abstract: An algorithm for deducing all possible scenarios of satellite members and possibilities thereof in a low earth orbiting (LEO) satellite constellation is described, which is achieved mainly by relying on the spherical geometry analysis and probabilities and statistics technologies, in an attempt to rapidly and precisely obtain the concerned scenarios and possibilities thereof observed on the earth ground. With any user-defined orbital parameters and a position of an observation station for the scenarios on the earth ground inputted, all the possible scenarios and possibilities thereof can be obtained with the algorithm.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 16, 2008
    Applicant: National Defense University
    Inventors: Sheng-Yi Li, Chao-Han Liu