Systems and methods for satellite navigation using locally generated ephemeris data
US8538682B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2009 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/27
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This disclosure is directed to methods and systems for locally generating calculated ephemerides that may be used by a navigation device to calculate position information before a broadcast ephemeris from a given navigation satellite has been completely received or when the broadcast ephemeris from the satellite is not available. Generally, the invention includes the steps of calibrating the initial satellite velocity from the last available broadcast ephemeris, correcting the clock for a prediction time period, predicting the satellite position during the time period and formatting the predictions into a calculated ephemeris to be used by the receiver to determine position information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.