Patents by Inventor Honghui Qi

Honghui Qi 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).

  • Inertial navigation sculling algorithm
    Patent number: 9534900
    Abstract: A system for determining a combined velocity rotation compensation and sculling compensation in an inertial navigation system includes: gyroscopes configured to provide a measured angular rotation rate with components from three orthogonal axes; accelerometers configured to provide a measured specific force with components from three orthogonal axes; and a processor configured to calculate a first combined velocity rotation compensation and sculling compensation at a single computational rate, the processor configured to: calculate a first cross product of an instantaneous angular rotation rate and a change in the measured specific force during a first interval; and sum the first cross product with a second cross product of a fraction of the change in the specific force during the second interval and the change in the measured angular rate during the first interval; where the first and second intervals are each one cycle of the single computational rate.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: January 3, 2017
    Assignee: SYSTRON DONNER INTERIAL, INC.
    Inventor: Honghui Qi
  • INERTIAL NAVIGATION SCULLING ALGORITHM
    Publication number: 20140114569
    Abstract: A system for determining a combined velocity rotation compensation and sculling compensation in an inertial navigation system includes: gyroscopes configured to provide a measured angular rotation rate with components from three orthogonal axes; accelerometers configured to provide a measured specific force with components from three orthogonal axes; and a processor configured to calculate a first combined velocity rotation compensation and sculling compensation at a single computational rate, the processor configured to: calculate a first cross product of an instantaneous angular rotation rate and a change in the measured specific force during a first interval; and sum the first cross product with a second cross product of a fraction of the change in the specific force during the second interval and the change in the measured angular rate during the first interval; where the first and second intervals are each one cycle of the single computational rate.
    Type: Application
    Filed: February 17, 2012
    Publication date: April 24, 2014
    Applicant: Systron Donner Inertial
    Inventor: Honghui Qi