Patents by Inventor Yuan Le

Yuan Le 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).

  • Methods and devices for correcting underwater photon displacement and for depth sounding with single-photon Lidar
    Patent number: 11815625
    Abstract: Methods and devices for correcting underwater photon displacement and for depth sounding with a single-photon Lidar are provided. The method includes: acquiring a pointing angle of a photon emitted by the single-photon Lidar, and coordinates of a water-surface photon signal and a water-bottom photon signal returned by the photon emitted by the single-photon Lidar; performing a sea wave fitting according to the water-surface photon signal to determine a sea wave model; determining an intersection of the photon and an air-water interface according to coordinates of any water-bottom photon, the pointing angle and the sea wave model; determining an underwater displacement error of the photon according to the intersection, the sea wave model and the pointing angle; and correcting the coordinates of the water-bottom photon according to the underwater displacement error. The invention performs sea wave modeling through water surface photon signal and determines intersection of the photon and water-air interface.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: November 14, 2023
    Assignee: China University of Geosciences, Wuhan
    Inventors: lizhe Wang, yifu Chen, yuan Le, gang Chen, weitao Chen, yusen Dong
  • Adaptive filtering method of photon counting lidar for bathymetry
    Patent number: 11448765
    Abstract: An adaptive filtering method of photon counting Lidar for bathymetry is provided in this invention, which includes steps: step S1: adaptively acquiring parameters of elliptic filtering for water surface photon signals; step S2: determining a relationship between filter parameters and elevation of underwater photon signals, and obtaining parameters of the elliptic filtering for photon signal in water column; and step S3: filtering and fitting the water surface photon signals and the underwater photon signals to acquire continuous bathymetry results.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: September 20, 2022
    Assignee: China University of Geosciences
    Inventors: Lizhe Wang, Yifu Chen, Yuan Le, Gang Chen, Weitao Chen
  • ADAPTIVE FILTERING METHOD OF PHOTON COUNTING LIDAR FOR BATHYMETRY
    Publication number: 20210116570
    Abstract: An adaptive filtering method of photon counting Lidar for bathymetry is provided in this invention, which includes steps: step S1: adaptively acquiring parameters of elliptic filtering for water surface photon signals; step S2: determining a relationship between filter parameters and elevation of underwater photon signals, and obtaining parameters of the elliptic filtering for photon signal in water column; and step S3: filtering and fitting the water surface photon signals and the underwater photon signals to acquire continuous bathymetry results.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicant: China University of Geosciences, Wuhan
    Inventors: Lizhe Wang, Yifu Chen, Yuan Le, Gang Chen, Weitao Chen
  • METHODS AND DEVICES FOR CORRECTING UNDERWATER PHOTON DISPLACEMENT AND FOR DEPTH SOUNDING WITH SINGLE-PHOTON LIDAR
    Publication number: 20210003668
    Abstract: Methods and devices for correcting underwater photon displacement and for depth sounding with a single-photon Lidar are provided. The method includes: acquiring a pointing angle of a photon emitted by the single-photon Lidar, and coordinates of a water-surface photon signal and a water-bottom photon signal returned by the photon emitted by the single-photon Lidar; performing a sea wave fitting according to the water-surface photon signal to determine a sea wave model; determining an intersection of the photon and an air-water interface according to coordinates of any water-bottom photon, the pointing angle and the sea wave model; determining an underwater displacement error of the photon according to the intersection, the sea wave model and the pointing angle; and correcting the coordinates of the water-bottom photon according to the underwater displacement error. The invention performs sea wave modeling through water surface photon signal and determines intersection of the photon and water-air interface.
    Type: Application
    Filed: September 23, 2020
    Publication date: January 7, 2021
    Applicant: China University of Geosciences, Wuhan
    Inventors: Lizhe Wang, Yifu Chen, Yuan Le, Gang Chen, Weitao Chen, Yusen Dong