Format:
1 Online-Ressource (11 Seiten)
ISSN:
1080-5370
,
1080-5370
Content:
Future generations of global navigation satellite systems (GNSSs) can benefit from optical technologies. Especially optical clocks could back-up or replace the currently used microwave clocks, having the potential to improve GNSS position determination enabled by their lower frequency instabilities. Furthermore, optical clock technologies—in combination with optical inter-satellite links—enable new GNSS architectures, e.g., by synchronization of distant optical frequency references within the constellation using time and frequency transfer techniques. Optical frequency references based on Doppler-free spectroscopy of molecular iodine are seen as a promising candidate for a future GNSS optical clock. Compact and ruggedized setups have been developed, showing frequency instabilities at the 10–15 level for averaging times between 1 s and 10,000 s. We introduce optical clock technologies for applications in future GNSS and present the current status of our developments of iodine-based optical frequency references.
Content:
Peer Reviewed
In:
Heidelberg : Springer, 25,3, 1080-5370
Language:
English
DOI:
10.1007/s10291-021-01113-2
URN:
urn:nbn:de:kobv:11-110-18452/27701-4
URL:
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