Adaptive Optics for GEO-Feeder Links: from Performance Analysis via Reciprocity Based Models to Experimental Demonstration - ONERA - Office national d'études et de recherches aérospatiales Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

Adaptive Optics for GEO-Feeder Links: from Performance Analysis via Reciprocity Based Models to Experimental Demonstration

Bouchra Benammar
  • Fonction : Auteur
  • PersonId : 1300236
  • IdRef : 183593111

Résumé

High capacity GEO-Feeder optical links are very promising but constitute a real challenge for the whole transmission chain. The modeling and mitigation of turbulence effects is a particularly critical issue that drives the other subsystems design requirements. Building on SAOST, our reciprocity based performance evaluation tool, we study the GEO-Feeder link scenario: adaptive optics error budget and performance in terms of link availability threshold, for forward and return links, as a function of the number of corrected modes and of the ground telescope diameter. Adaptive optics correction is shown to be essential both for downlink and uplink. Choosing a large diameter is highly beneficial for downlink, pointahead anisoplanatism is however shown to level uplink performance for diameters above a few tens of centimeters. The article also demonstrates that the reciprocity, beyond providing powerful numerical tools, is a key principle for an indepth understanding of the physical effects impacting adaptive optics assisted ground-space optical links. These theoretical results are complemented by a brief presentation of FEEDELIO, the first experimental demonstration of uplink pre-compensation performed on a slant line of sight representative of a GEO-Feeder link.
Fichier principal
Vignette du fichier
Conan-Bonnefois-COAT2019-S5-GEOfeeder.pdf (498.48 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03206080 , version 1 (22-04-2021)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Jean-Marc Conan, Aurélie Montmerle-Bonnefois, Nicolas Védrenne, Caroline B Lim, Cyril Petit, et al.. Adaptive Optics for GEO-Feeder Links: from Performance Analysis via Reciprocity Based Models to Experimental Demonstration. COAT-2019 - workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation), ONERA, Dec 2019, Châtillon, France. ⟨10.34693/COAT2019-S5-003⟩. ⟨hal-03206080⟩
278 Consultations
362 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More