GNSS signal processing with known position for reconvergence
US9709683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2012 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Oct 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus provide for positioning of a rover antenna from GNSS data derived from multi-frequency signals and correction data derived from a network of reference stations. At each of a plurality of epochs, the GNSS data and correction data are used to estimate values defining a rover antenna position and a set of multi-frequency ambiguities. An ionospheric-free carrier-phase ambiguity per satellite is estimated based on a known rover antenna position. The estimated ionospheric-free carrier-phase ambiguity is combined with an estimated widelane ambiguity and with an estimated ionospheric-free ambiguity and with values defining the known rover antenna position to obtain values defining an aided rover antenna position and aided multi-frequency ambiguities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.