Method for using three GPS frequencies to resolve carrier-phase integer ambiguities
US6934632B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Oct 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/41
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for generating an ambiguity-resolved, refraction-corrected, and noise-minimized carrier-phase measurement. The method includes forming a first composite measurement using GPS carrier-phase measurements on the L1, L2 and L5 frequencies. To reduce the noise in the first composite measurement, the method further includes forming a second composite measurement using GPS carrier-phase measurements on at least two of the three GPS carrier frequencies. The second composite measurement is formed to have a small multi-path noise therein so that it can be used to smooth the first composite measurement so that the multipath noise is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.