LEO-augmentation-based convergence time shortening method of wide-area UDUC PPP-RTK positioning
US12429608B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2023 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | May 14, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An LEO-augmentation-based convergence time shortening method of wide-area UDUC PPP-RTK positioning is provided, which includes: establishing UDUC PPP-RTK network end observation equations of GNSSs, and integrating navigation signals of an LEO satellite navigation system into the UDUC PPP-RTK network end observation equations, to obtain LEO-integrated GNSS UDUC PPP-RTK network end observation equations; solving network end parameters of the LEO-integrated GNSS UDUC PPP-RTK network end observation equations; correcting user end GNSS UDUC observation equations and user end LEO UDUC observation equations according to the network end parameters; solving corrected user end GNSS UDUC observation equations and corrected user end LEO UDUC observation equations, to obtain a user end positioning vector in an ambiguity-float mode; and a user end float ambiguity vector and its variance-covariance matrix; and using the user end float ambiguity vector and the variance-covariance matrix to perform the PAR; and obtain PPP-RTK user positioning in a PAR-enabled mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.