Method for accuracy estimation of network based corrections for a satellite-aided positioning system
US8072373B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2008 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Dec 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for accuracy estimation of network based corrections for a satellite-aided positioning system, with a network of reference stations code and phase measurements are recorded by the reference stations and transferred to a network processing centre. The measurements are converted to observables and single-differences between a master station and at least one auxiliary station selected for each reference station are calculated. Estimates of single-difference between each reference station and the corresponding master station are generated and slant residuals for each reference station and satellite are calculated by using the difference between calculated single-differences and estimates. Subsequently double-differences are formed by differencing satellite s and the slant residuals of a reference satellite k, leading to zenith residuals calculated by mapping the double-differences to a zenith value. Error values for each reference station are computed by using the zenith residuals and residual dispersive and non-dispersive error values for a potential rover position are estimated by combining residual dispersive and non-dispersive error values of all reference stations. The…
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