Patents by Inventor Chengfa GAO

Chengfa GAO 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).

  • High-precision point positioning method and device based on smartphone
    Patent number: 11709281
    Abstract: The present invention discloses a high-precision point positioning method and device based on a smartphone. The method of the present invention, which belongs to the technical field of satellite positioning, improves the conventional PPP uncombined positioning model, and only uses original GNSS observation values received by a smartphone to carry out high-precision positioning without GNSS reference stations.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: July 25, 2023
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Chengfa Gao, Bo Chen, Yongsheng Liu, Puyu Sun
  • HIGH-PRECISION POINT POSITIONING METHOD AND DEVICE BASED ON SMARTPHONE
    Publication number: 20220155465
    Abstract: The present invention discloses a high-precision point positioning method and device based on a smartphone. The method of the present invention, which belongs to the technical field of satellite positioning, improves the conventional PPP uncombined positioning model, and only uses original GNSS observation values received by a smartphone to carry out high-precision positioning without GNSS reference stations.
    Type: Application
    Filed: January 16, 2020
    Publication date: May 19, 2022
    Applicant: SOUTHEAST UNIVERSITY
    Inventors: Chengfa GAO, Bo CHEN, Yongsheng LIU, Puyu SUN
  • Tightly combined GPS/BDS carrier differential positioning method
    Patent number: 11294073
    Abstract: A tightly combined GPS/BDS carrier differential positioning method is provided.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: April 5, 2022
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Shuguo Pan, Wang Gao, Yanheng Wang, Chengfa Gao, Qing Wang, Ruicheng Zhang, Jian Zhang, Guoliang Liu
  • TIGHTLY COMBINED GPS/BDS CARRIER DIFFERENTIAL POSITIONING METHOD
    Publication number: 20200116872
    Abstract: A tightly combined GPS/BDS carrier differential positioning method is provided.
    Type: Application
    Filed: May 4, 2018
    Publication date: April 16, 2020
    Applicant: SOUTHEAST UNIVERSITY
    Inventors: Shuguo PAN, Wang GAO, Yanheng WANG, Chengfa GAO, Qing WANG, Ruicheng ZHANG, Jian ZHANG, Guoliang LIU