Galileo in Time Metrology
|Coordinator||RISE Research Institutes of Sweden AB - SP Mätteknik, Borås|
|Funding from Vinnova||SEK 630 000|
|Project duration||January 2017 - December 2018|
Purpose and goal
The aim of this project is to improve the robustness and quality in time metrology with GNSS (Global Navigation Satellite Systems) through inclusion of new signals and systems in our softwares. The satellite systems Galileo och BeiDou are now in use. A new method for realtime time distribution via Lantmäteriet´s GNSS data has also been developed.
Expected results and effects
Our tests have shown that the time comparison quality at separate use of Galileo signals is comparable to GPS. Separate use of BeiDou give slightly worse resultats, but still comparable to GLONASS. Both Galileo and BeiDou are still under development, and the quality is expected to increase. They both, as independent systems, already contribute to the robustness in time metrology. The new form for time distribution via GNSS data has, through the connection to Lantmäteriet´s system SWEPOS, the potential to reach a mass market with time information from our laboratory.
Planned approach and implementation
At the time of writing the application for this grant, the inclusion of Galileo was seen as the most important improvement of our GNSS time metrology. However the rapid development of BeiDou led us to work with both systems in parallel. The synergy was fruitful, but some of the goals for the realtime software were not achieved.