Method and system for synchronizing receiver systems of a wireless location system
US6351235B1 · kind B1 · utility
298Cited by
28References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Jan 31, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a wireless location system (WLS) including a plurality of geographically separated receiver systems, a system for synchronizing the respective receiver systems includes the use of an enhanced GPS receiver including a mechanism for receiving GPS signals and removing at least a portion of the timing instability of the GPS signals. An output of the enhanced GPS receiver is provided to a low phase noise phase-locked loop circuit that is used to produce reference signals with less than 0.01 degrees RMF of phase noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.