Patent · US Active

Nonlinear variable lag smoother

US8433544B2 · kind B2 · utility

1Cited by

6References

20Claims

0Family size

Assignee

Analytical Graphics Inc. · US

Inventors

James R. Wright · Valrico, US
James Woodburn · Wheaton, US

Key dates

Filing date	Dec 24, 2008
Grant date	Apr 30, 2013
Priority date	—
Expiry date	Feb 20, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64G1/36
WIPO fieldPharmaceuticals
WIPO sectorChemistry

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).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.