US Patent 8433544 Nonlinear variable lag smoother

Patent 8433544 was granted and assigned to Analytical Graphics Inc. on April, 2013 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Analytical Graphics Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

84335440

Patent Inventor Names

James R. Wright0

James William Woodburn0

Date of Patent

April 30, 2013

Patent Application Number

123439480

Date Filed

December 24, 2008

Patent Primary Examiner

‌

Eliseo Ramos-Feliciano

Patent 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).