Location system and method that achieves time synchronized network performance with nodes divided into separate networks
US7218229B2 · kind B2 · utility
18Cited by
16References
51Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Mar 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for locating an object within a monitored environment includes receivers arranged in loosely coupled networks. A tag transmitter acts as a network node and bridge between the loosely coupled networks. A processor is operative with each receiver within each network for defining a clock timing for each network, a system time for all networks, and tracking its relationship to the clock timing for each network for time synchronizing all receivers. The processor is also operative for conducting differentiation of time of arrival signals received from a tag transmitter to locate an object associated with the tag transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.