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Optical Clock Technologies for Future GNSS

Schuldt, Thilo and Gohlke, Martin and Sanjuan Munoz, Jose and Abich, Klaus and Oswald, Markus and Döringshoff, Klaus and Kovalchuk, Evgeny and Peters, A. and Braxmaier, Claus (2018) Optical Clock Technologies for Future GNSS. ION GNSS, Miama, USA.

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Abstract

Clocks are the primary payload on GNSS satellites. In the last decades, optical clock technologies evolved, where laboratory setups of single ion and lattice clocks have demonstrated frequency stabilities at the 10-18 level for longer integration times of a few thousand seconds. Setups using Doppler-free spectroscopy of molecular iodine have much lower complexity and demonstrated frequency stabilities at the 10-15 level for integration times up to 10,000 s. They might be an option for future GNSS, in a first step backing-up or replacing the currently used microwave clocks. Future concepts of GNSS employ optical technologies including optical frequency references and optical inter-satellite links. Beside long-term stability, also short-term stability of the oscillators is becoming relevant. Lasers, frequency stabilized to an optical cavity deliver short-term stability up to several seconds and are most promising candidates for such an oscillator. We present current work on the development of iodine- and cavity- based optical frequency references with respect to applications in GNSS.

Item URL in elib:https://elib.dlr.de/122215/
Document Type:Conference or Workshop Item (Speech)
Title:Optical Clock Technologies for Future GNSS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schuldt, ThiloDLR-RY, BremenUNSPECIFIED
Gohlke, MartinMartin.Gohlke (at) dlr.deUNSPECIFIED
Sanjuan Munoz, JoseJose.Sanjuan (at) dlr.deUNSPECIFIED
Abich, KlausKlaus.Abich (at) dlr.deUNSPECIFIED
Oswald, MarkusZARM, Uni BremenUNSPECIFIED
Döringshoff, KlausHumboldt University Berlin, GermanyUNSPECIFIED
Kovalchuk, EvgenyHumboldt University Berlin, GermanyUNSPECIFIED
Peters, A.Humboldt Univ., BerlinUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIED
Date:2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Optical Clock, GNSS
Event Title:ION GNSS
Event Location:Miama, USA
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Systems Engineering Optische Systeme
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systems Enabling Technologies
Deposited By: Hüls, Simone
Deposited On:24 Oct 2018 11:23
Last Modified:24 Oct 2018 11:23

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