Patents by Inventor James William Woodburn

James William Woodburn 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).

  • Nonlinear variable lag smoother
    Patent number: 8433544
    Abstract: An extended Kalman filter (EKF) is combined with a fixed epoch smoother (FES) to produce a new variable lag smoother (VLS). The fixed epoch lags EKF measurement time-tags with variable time lag. The combination of EKF and FES is referred to herein as a variable lag smoother (VLS).
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: April 30, 2013
    Assignee: Analytical Graphics Inc.
    Inventors: James R. Wright, James William Woodburn
  • Nonlinear Variable Lag Smoother
    Publication number: 20100161284
    Abstract: An extended Kalman filter (EKF) is combined with a fixed epoch smoother (FES) to produce a new variable lag smoother (VLS). The fixed epoch lags EKF measurement time-tags with variable time lag. The combination of EKF and FES is referred to herein as a variable lag smoother (VLS).
    Type: Application
    Filed: December 24, 2008
    Publication date: June 24, 2010
    Inventors: James R. Wright, James William Woodburn