Cited by 84Advanced Frequency and Time StandardsOptical Wireless Communication TechnologiesAdaptive optics and wavefront sensing

Impact of turbulence on high-precision ground-satellite frequency transfer with two-way coherent optical links

Robert, Clélia, Conan, Jean-Marc, Wolf, Peter·2016·Physical Review A

Abstract

Bidirectional ground-satellite laser links suffer from turbulence-induced scintillation and phase distortion. We study the impact of turbulence on coherent detection and the related phase noise that restricts time and frequency transfer precision. We evaluate the capacity to obtain a two-way cancellation of atmospheric effects despite the asymmetry between up- and downlink that limits the link reciprocity. For ground-satellite links, the asymmetry is induced by point-ahead angle and possibly the use, for the ground terminal, of different transceiver diameters, in reception and emission. The quantitative analysis is obtained thanks to refined end-to-end simulations under realistic turbulence and wind conditions as well as satellite kinematics. These temporally resolved simulations allow characterizing the coherent detection in terms of time series of heterodyne efficiency and phase noise for different system parameters. We show that tip-tilt correction on ground is mandatory at reception for the downlink and as a pre-compensation of the uplink. Besides, thanks to the large tilt angular correlation, the correction is shown to be efficient on uplink despite the point-ahead angle. Very good two-way compensation of turbulent effects is obtained even with the asymmetries. The two-way differential phase noise is reduced to $1{\mathrm{rad}}^{2}$, with the best fractional frequency stability below $2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}17}$ after 1-s averaging time.

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Crossref · 10.1103/physreva.93.033860

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  • It is not clear yet if phase coherent free space optical links will be able to be as good as optical fibre techniques, mainly because of atmospheric turbulence.

    “It is not clear yet if these techniques will be able to be as good as optical fibre techniques, mainly because of the effect of atmospheric turbulence [114, 115, 116].”

    From Chronometric Geodesy: Methods and Applications (2019) · cites this paper as [116]

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Authors
Robert, C., Conan, J.-M., & Wolf, P.
Affiliations
Office National d'Études et de Recherches Aérospatiales (FR)
Venue
Physical Review A
Published
2016-03-31
Volume
93
Issue
3
ISSN
  • 0556-2791 (ISSN-L)
  • 2469-9926
  • 2469-9934
OpenAlex
W2315814114
Cited by
84
References
35
Citations by year
2026: 2 · 2025: 6 · 2024: 5 · 2023: 13 · 2022: 9 · 2021: 7 · 2020: 10 · 2019: 10 · 2018: 6 · 2017: 8 · 2016: 8
FWCI
5.05
Type
journal article
Language
en
Open access
closed
Locations
  • Physical Review A (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Centre National d’Etudes Spatiales
  • European Space Agency
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Frequency and Time Standards
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Optical Wireless Communication Technologies
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Adaptive optics and wavefront sensing
Keywords
atmospheric turbulence, frequency transfer, coherent detection, phase noise, tip-tilt correction, heterodyne detection, fractional frequency stability, wind conditions, satellite kinematics

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