Method of amending navigation data of a global navigation system
US8570217B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2010 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Sep 2, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/33
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for reducing the adverse effect of clock frequency jumps on a user-position determination device in a global navigation system, a plurality of space vehicles each having a clock, transmit position determination information to the position determining device. If a sufficient number of such navigation signals from a first group of space vehicles having clocks in which no jump occurs are available for this purpose, and if a calculated integrity risk is acceptable, position determination is performed using those navigation signals. If not, however, the position determination device receives navigation signals from space vehicles of a second group with clocks in which jumps can occur. The latter signals are combined with signals from the first group in a manner which takes into account possible jumps, and the process is repeated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.