Satellite-based integer cycle ambiguity resolution of local medium wave radio signals
US9523763B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2013 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Mar 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and methods for resolving integer cycle ambiguity in medium wave carrier radio signals are presented. A satellite signal is received at a receiving location and a measured code phase of the satellite signal is measured. A satellite location estimate of the receiving location is computed based on the measured code phase. Medium wave radio carrier signals from medium wave radio transmitters are received at the receiving location. A number of wavelengths of the medium wave radio carrier signals from the satellite location estimate to each of the medium wave radio transmitters is determined respectively. A carrier phase of each of the medium wave radio carrier signals is measured. An improved position estimate of the receiving location is computed based on the number of wavelengths and the carrier phase of each of the medium wave radio carrier signals, and a location of each of the medium wave radio transmitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.