Location and tracking of people with combined use of RF infrastructure and dead reckoning modules
US7420510B2 · kind B2 · utility
19Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2006 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Jul 25, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for tracking persons and other assets in a structure, having a multi-function tracking tag and a network of fixed RF receivers forming a gateway array. The location of the person being tracked is calculated by a computer using an algorithm that weights each separate signal according to the probability of its accuracy, thus using data with the least error. A preferred algorithm is shown in FIG. 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.