Apparatus and method for measuring the accurate position of moving objects in an indoor environment
US7761233B2 · kind B2 · utility
37Cited by
10References
11Claims
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Key dates
| Filing date | Jun 30, 2006 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | May 20, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method is disclosed for efficiently sensing and tracking objects in an indoor environment by simultaneously measuring the object movement with an inertial navigation system and a reference location positioning system. By combining the measurements obtained with accelerometers, gyroscopes, angle estimators and the reference system using an extended Kalman filter based approach, a position estimate is obtained with high reliability and precision accuracy. Improvement in performance is obtained by the incorporation of dynamic mode switching and forward-backward smoothing in the location position estimator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.