Processing multi-GNSS data from mixed-type receivers
US8694250B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2009 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Sep 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Computer-implemented methods and apparatus are presented for processing data collected by at least two receivers from multiple satellites of multiple Global Navigation Satellite Systems (GNSS), where at least one GNSS is Frequency Division Multiple Access (FDMA). Data sets are obtained which comprise a first data set from a first receiver and a second data set from a second receiver. The first data set comprises a first FDMA data set and the second data set comprises a second FDMA data set. At least one of a code bias and a phase bias may exist between the first FDMA data set and the second FDMA data set. At least one receiver-type bias is determined, to be applied when the data sets are obtained from receivers of different types. The data sets are processed, based on the at least one receiver-type bias, to estimate carrier floating-point ambiguities. Carrier integer ambiguities are determined from the floating-point ambiguities. The scheme enables Globalnaya Navigatsionnaya Sputnikovaya Sistema (GLONASS) carrier phase ambiguities to be resolved and used in a combined FDMA/Code Division Multiple Access (CDMA)(e.g., GLONASS/Global Positioning System (GPS) centimeter-level solution. …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.