Satellite-position table messaging
US7415353B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 25, 2004 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Aug 6, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/258
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation satellite receiver accepts satellite-position table messages comprising truncated GPS ephemeris parameters. In particular, at least one of the two harmonic corrections to inclination angle, Cic and Cis, are not communicated and not used in the solution of navigation receiver position. In a first method embodiment of the present invention, both the two harmonic corrections to inclination angle, Cic and Cis, are omitted from the computation. In a second method embodiment of the present invention, only one of the two harmonic corrections to inclination angle, Cic and Cis, are omitted from the computation, depending on Min(Cis sin(2φk), Cis cos(2φk)).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.