GNSS-RTK-based positioning method
US11002860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | May 30, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/41
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The GNSS-RTK-based positioning method includes the following steps: Step 1, performing data quality control according to analyzed raw satellite-ground observation values; Step 2, performing SPP positioning by using a pseudorange observation value, and performing RTD positioning according to an RTD pseudorange residual of a previous epoch and a pseudorange residual of a current epoch obtained through SPP positioning calculation; Step 3, calculating a float solution by means of the least squares method and Kalman filtering of additional ambiguity parameters in which the RTD positioning result is used as an initial value; and Step 4, converting the float ambiguity solution into a fixed solution by using an optimized partial ambiguity fixing strategy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.