Adjusting processor clock information using a clock drift estimate
US7889125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2005 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Mar 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/47
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation system comprises a global positioning satellite receiver to receive at least one global positioning satellite signal and to output global positioning satellite information. The navigation system further comprises a programmable processor, communicatively coupled to the global positioning satellite receiver, to execute software. The navigation system further comprises a clock, communicatively to the programmable processor, to output processor clock information. The software estimates an amount of drift in the processor clock information using the GPS information and adjusts the processor clock information for the amount of drift in order to generate adjusted processor clock information. The software generates a navigation solution as a function of at least the global positioning satellite information and the adjusted processor clock information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.