TESAT laser communication terminal performance results on 5.6Gbit coherent inter satellite and satellite to ground links

Gregory, Mark A; Heine, F.; Kämpfner, Hartmut; Meyer, Rolf; Fields, R. A.; Lunde, C.

doi:10.1117/12.2309152

Cited by 49 publications

(26 citation statements)

References 5 publications

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“…DAC/ADC bandwidth, and since space-qualified DSP for OISL is much slower, we set the symbol rate to 1 GS/s in order to get a more realistic scenario. Current OISL systems achieve data rates between 1 to 6 Gbps [1,2]. Our simulation setup is similar to the experimental setup.…”

Section: Fft-algorithmmentioning

confidence: 55%

“…However, the very high transmission distances necessitate an optical receiver design enabling high receiver sensitivity which requires careful carrier synchronization and a quasi-coherent detection scheme. In state of the art systems a homodyne detection scheme uses an optical phase-locked loop (OPLL), to adjust the frequency and phase of the local laser to the incoming signal [1,2]. However, the OPLL hardware complexity increases with the modulation order.…”

Section: Investigation Of Coherent Receiver Designs In High-speed Optmentioning

confidence: 99%

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Investigation of coherent receiver designs in high-speed optical inter-satellite links using digital signal processing

Schaefer

Gregory

Rosenkranz

2017

International Conference on Space Optics — ICSO 2016

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Section: Fft-algorithmmentioning

confidence: 55%

Section: Investigation Of Coherent Receiver Designs In High-speed Optmentioning

confidence: 99%

Investigation of coherent receiver designs in high-speed optical inter-satellite links using digital signal processing

Schaefer

Gregory

Rosenkranz

2017

International Conference on Space Optics — ICSO 2016

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“…In order to mitigate the influence of turbulent atmosphere effects the OGS telescope's receiving aperture has been reduced to half the size of flight LCT receivers. Bidirectional coherent communication has been achieved through the atmosphere during SGLs [3]. The results achieved with the mobile OGS when performing SGLs provided a proof of the capability to operate, through a turbulent atmosphere, a coherent optical communication system which is using homodyne binary phase shift keying (BPSK) modulation [3].…”

Section: Introductionmentioning

confidence: 88%

Use of adaptive optics in ground stations for high data rate satellite-to-ground links

Fischer¹,

Berkefeld²,

Feriencik³

et al. 2017

International Conference on Space Optics — ICSO 2016

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Abstract-Over the past years we have successfully applied adaptive optics (AO) in some optical ground stations (OGS) to improve the signal-to-noise ratio of satellite to ground laser communications. In the paper we present the realized setups including optics and components, the reconstruction scheme especially latest performance measurements of the AO system implemented at the 26cm TAOGS optical terminal which is presently at the Observatorio del Teide, Tenerife. Furthermore, we present the concept for the upgrade of ESA's OGS (1 m telescope) with an AO system for satellite-to-ground links. The system is suited to be operated with coherent laser communication systems at 1064nm. However, the upgraded ESA OGS can also be operated with laser light in the 1550nm range. The wavefront sensor is a Shack-Hartmann-sensor (21 sub-apertures across the pupil), matched to a 22x22 actuator deformable mirror (DM). Due to a special high speed infrared camera, the control loop can run at speeds of typically 4-7 kHz, depending on the received laser power.

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“…Several missions demonstrating LEO-LEO [1] LEO -Ground [2] and Moon-Ground [3] laser communication in the Gbps range have shown that space based laser communication is a very useful high bandwidth point to point communication method in the near Earth region. LEO-GEO connections have been successfully demonstrated a decade ago by the Artemis -Spot 4 mission, with data rates of 50 Mbps [4] .…”

Section: Introductionmentioning

confidence: 99%

LCT for the European data relay system: in orbit commissioning of the Alphasat and Sentinel 1A LCTs

et al. 2015

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The European Data Relay System (EDRS) relies on optical communication links between Low Earth Orbit (LEO) and geostationary (GEO) spacecrafts. Data transmission at 1.8 Gbps between the S/Cs will be applied. EDRS is foreseen to go into operation in 2015. As a precursor to the EDRS GEO Laser Communication Terminals (LCT), an LCT is embarked on the Alphasat GEO S/C. Sentinel 1A is a LEO earth observation satellite as part of ESAs Copernicus program and carries an LCT on board. Both the Alphasat and the Sentinel 1A LCT have completed their individual in orbit commissioning and a joint link commissioning phase, with first LEO to GEO optical communication links in 2014. In this presentation, the design principle of the LCT applied for EDRS will be investigated. The most recent results of the in-orbit link commissioning phase of the LCTs on board of Alphasat and Sentinel 1A will be presented.

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TESAT laser communication terminal performance results on 5.6Gbit coherent inter satellite and satellite to ground links

Cited by 49 publications

References 5 publications

Investigation of coherent receiver designs in high-speed optical inter-satellite links using digital signal processing

Investigation of coherent receiver designs in high-speed optical inter-satellite links using digital signal processing

Use of adaptive optics in ground stations for high data rate satellite-to-ground links

LCT for the European data relay system: in orbit commissioning of the Alphasat and Sentinel 1A LCTs

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