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Giggenbach, Dirk and Moll, Florian (2017) Scintillation Loss in Optical Low Earth Orbit Data Downlinks with Avalanche Photodiode Receivers. In: ICSOS 2017. IEEE Xplore. International Conference on Space Optical Systems 2017 (ICSOS), 13.-16. Nov. 2017, Naha, Japan.
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Official URL: http://ieeexplore.ieee.org/
Abstract
Future Earth Observation satellite data downlinks via directed laser beams are a promising technique to overcome the data repatriation bottleneck in high resolution sensor missions. A challenge for this technology are received power scintillations induced by atmospheric index-of-refraction turbulence (IRT). The strength of these signal variations depends on the IRT height profile, receiver aperture size, wavelength, and link elevation. We analyze measured optical satellite downlink power vectors to verify a model for the dynamic power scintillation loss. Due to their increased sensitivity compared with PIN-receivers, Avalanche Photo Diodes (APD) are usually used within data receivers on ground. This allows bulk receivers to avoid the demanding coupling onto single-mode detectors. As their sensitivity run is defined by the influence of thermal-, and signal-dependent shot-noise, a new formulation for this dependency is evaluated, and the according modified scintillation loss is quantified. This allows appropriate dimensioning of link budgets and the necessary error control mechanisms to enable reliable high-speed data transfer from low earth orbit satellites to the ground.
| Item URL in elib: | https://elib.dlr.de/115715/ | |||||||||
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| Document Type: | Conference or Workshop Item (Speech) | |||||||||
| Title: | Scintillation Loss in Optical Low Earth Orbit Data Downlinks with Avalanche Photodiode Receivers | |||||||||
| Authors: |
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| Date: | November 2017 | |||||||||
| Journal or Publication Title: | ICSOS 2017 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | Yes | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Publisher: | IEEE Xplore | |||||||||
| Status: | Published | |||||||||
| Keywords: | FSO, optical LEO downlinks, scintillation loss, shot-noise limited receiver, Avalanche Photo Diode, KNOCGOP | |||||||||
| Event Title: | International Conference on Space Optical Systems 2017 (ICSOS) | |||||||||
| Event Location: | Naha, Japan | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 13.-16. Nov. 2017 | |||||||||
| Organizer: | National Institute of Communications Technology, Japan (NICT) | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Space | |||||||||
| HGF - Program Themes: | Communication and Navigation | |||||||||
| DLR - Research area: | Raumfahrt | |||||||||
| DLR - Program: | R KN - Kommunikation und Navigation | |||||||||
| DLR - Research theme (Project): | R - Vorhaben Multimedia Satellitennetze (old) | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Institute of Communication and Navigation > Satellite Networks | |||||||||
| Deposited By: | Giggenbach, Dr.-Ing. Dirk | |||||||||
| Deposited On: | 28 Nov 2017 13:55 | |||||||||
| Last Modified: | 31 Jul 2019 20:13 |
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