Method and system for clock synchronization using templated adaptive maneuver detection
US8275582B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2009 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Oct 16, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/183
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for estimating the inception of gimbal motion of an inertial measurement unit (IMU), includes independently filtering, in a computer process, three-axis angular orientation rate information or data from component gyroscopes in the IMU, to provide a first output; adaptively detecting, in another computer process, discontinuities in the first output; estimating a regularity of gimbal motion to provide a second output; and comparing the discontinuities detected in the first output to the estimated regularity of gimbal motion provided in the second output, in another computer process, to determine which of the discontinuities detected in the first output are true discontinuities and which of the discontinuities in the first output that are false discontinuities, and to identify other discontinuities which have been missed in the first output. The true and missed discontinuities are estimates of the inception of gimbal motion of the IMU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.