Downlink communication experiments with OSIRISv1 laser terminal onboard Flying Laptop satellite

Dirk Giggenbach; Christian Fuchs; Christopher Schmidt; Benjamin Rödiger; Steffen Gaißer; Sabine Klinkner; Duy-Ha Phung; Julien Chabé; Clément Courde; Nicolas Maurice; Hervé Mariey; Etienne Samain; Géraldine Artaud

doi:10.1364/AO.446771

Applied Optics
Vol. 61,
Issue 8,
pp. 1938-1946
(2022)
•https://doi.org/10.1364/AO.446771

Downlink communication experiments with OSIRISv1 laser terminal onboard Flying Laptop satellite

Dirk Giggenbach, Christian Fuchs, Christopher Schmidt, Benjamin Rödiger, Steffen Gaißer, Sabine Klinkner, Duy-Ha Phung, Julien Chabé, Clément Courde, Nicolas Maurice, Hervé Mariey, Etienne Samain, and Géraldine Artaud

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Dirk Giggenbach, Christian Fuchs, Christopher Schmidt, Benjamin Rödiger, Steffen Gaißer, Sabine Klinkner, Duy-Ha Phung, Julien Chabé, Clément Courde, Nicolas Maurice, Hervé Mariey, Etienne Samain, and Géraldine Artaud, "Downlink communication experiments with OSIRISv1 laser terminal onboard Flying Laptop satellite," Appl. Opt. 61, 1938-1946 (2022)

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- Fiber Optics, Fiber Sensors, and Optical Communications
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About this Article
History
- Original Manuscript: October 25, 2021
- Revised Manuscript: February 7, 2022
- Manuscript Accepted: February 7, 2022
- Published: March 3, 2022

Abstract

Downlink measurement campaigns from the optical downlink terminal OSIRISv1 onboard the LEO satellite Flying Laptop were carried out with the French Observatoire de la Côte d’Azur and with two Optical Ground Stations of the German Aerospace Center. On/off keyed data at 39 Mb/s were modulated on the laser signal, and according telecom reception was performed by the ground stations. The pointing of the laser terminal was achieved by open-loop body pointing of the satellite orientation, with its star sensor as attitude control signal. We report here on the measurements and investigations of the downlink signal and the data transmission.

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Data availability

Data underlying the results presented in this paper are available at the data repository website of University of Stuttgart in Dataset 1, Ref. [21].

21. M. Boettcher, S. Klinkner, S. Gaisser, and M. Alvarez Rua, “Data of the small satellite Flying Laptop” University of Stuttgart (2021), https://darus.uni-stuttgart.de/dataverse/irs_SatTech_FLP.

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OSIRISv1	$T \times 1$ (EDFA)	$T \times 2$ (HPLD)
Wavelength	1545 nm	1550 nm
Polarization	random	random
Data rate options	39–622 Mb/s in steps of factor two	39 or 78 Mb/s
Optical Power mean	1 W	0.10 W
Divergence FWHM	1.0 mrad	1.0 mrad
Pointing loss	$< 3 d B$	$< 3 d B$

Link Budget Component	Unit	Value
Tx-power	dBm	$+ 30$
Tx-internal loss	dB	−1.5
Divergence FWHM	mrad	1.0
Tx antenna gain	dB	$+ 70.4$
Circular orbit height	km	595
Distance at 20° elevation	km	1381
Free-Space loss	dB	−261,0
Atmospheric loss	dB	−1.5
On-axis intensity at Rx	$n W / m^{2}$	233
Rx telescope area (60 cm TOGS)	$m^{2}$	0.26
Rx-aperture gain	dB	$+$ 121.2
Rx-internal loss and splitting	dB	−2
Power onto detector	nW	39

	MeO-OGS	OGSOP	TOGS
Aperture diameter	50 cm (after splitting)	40 cm	60 cm
Inner obscuration by secondary (diam.)	NA	13 cm	16 cm
Detector diameter	data-APD: 200 µm	power sensor: 1 mm	data-APD: 200 µm
Field-of-view of data detector	142 µrad	NA	167 µrad
Splitting between data-det./tracking-cam	70/30	NA	90/10
FoV of tracking cam (diagonal)	300 µrad	15.4 mrad	3.84 mrad

OSIRISv1	$T \times 1$ (EDFA)	$T \times 2$ (HPLD)
Wavelength	1545 nm	1550 nm
Polarization	random	random
Data rate options	39–622 Mb/s in steps of factor two	39 or 78 Mb/s
Optical Power mean	1 W	0.10 W
Divergence FWHM	1.0 mrad	1.0 mrad
Pointing loss	$< 3 d B$	$< 3 d B$

Link Budget Component	Unit	Value
Tx-power	dBm	$+ 30$
Tx-internal loss	dB	−1.5
Divergence FWHM	mrad	1.0
Tx antenna gain	dB	$+ 70.4$
Circular orbit height	km	595
Distance at 20° elevation	km	1381
Free-Space loss	dB	−261,0
Atmospheric loss	dB	−1.5
On-axis intensity at Rx	$n W / m^{2}$	233
Rx telescope area (60 cm TOGS)	$m^{2}$	0.26
Rx-aperture gain	dB	$+$ 121.2
Rx-internal loss and splitting	dB	−2
Power onto detector	nW	39

Abstract

Data availability

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Figures (17)

Tables (3)

Applied Optics