Pre-correction Adaptive Optics performance of a 10 km Laser Link
| Autor: | Federico Pettazzi, Tjeerd Russchenberg, Matthias Richerzhagen, Jet Human, Niek Doelman, Ivan Ferrario, Ramon Mata Calvo, T.M.N. Moens, Remco den Breeje, Juraj Poliak, Ricardo Barrios, Rudolf Saathof, W. Klop, Michael Gruber |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
KNSANOCGOP
Computer science Optical communication Satellitennetze Optical satellite communication Throughput adaptive optics Link budget Telecommunications link Geostationary orbit Electronic engineering Communications satellite free space optical communications Adaptive optics Free-space optical communication Institut für Kommunikation und Navigation |
| Popis: | For the next generation of very high throughput communication satellites, free-space optical (FSO) communication between ground stations and geostationary telecommunication satellites is likely to replace conventional RF links. To mitigate atmospheric turbulence, TNO and DLR propose Adaptive Optics (AO) to apply uplink pre-correction. In order to demonstrate the feasibility of AO pre-correction an FSO link has been tested over a 10 km range. This paper shows that AO pre-correction is most advantageous for low point ahead angles (PAAs), as expected. In addition, an optimum AO precorrection performance is found at 16 AO modes for the experimental conditions. For the specific test site, tip-tilt precorrection accounted for 4.5 dB improvement in the link budget. Higher order AO modes accounted for another 1.5 dB improvement in the link budget. From these results it is concluded that AO pre-correction can effectively improve high-throughput optical feeder links. |
| Databáze: | OpenAIRE |
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