| DOI | Trouver le DOI : https://doi.org/10.1109/ICCWorkshops57953.2023.10283690 |
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| Auteur | Rechercher : Khallaf, Haitham S.; Rechercher : Amini, Aydin; Rechercher : Orth, Antony1; Rechercher : Pitts, Oliver2; Rechercher : Kleiman, Rafael; Rechercher : Hranilovic, Steve |
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| Affiliation | - Conseil national de recherches du Canada. Technologies numériques
- Conseil national de recherches du Canada. Électronique et photonique avancées
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| Format | Texte, Article |
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| Conférence | WS15 IEEE ICC 2023 3rd Workshop on Satellite Mega-Constellations in the 6G Era (6GSatComNet'23), May 28 - June 1, 2023, Rome, Italy |
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| Sujet | atmospheric turbulence; adaptive optics; free space optical communications; wavefront distortion |
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| Résumé | Turbulence-induced wavefront distortion poses a sig-nificant obstacle in the implementation of large constellation co-herent modulation techniques in optical satellite-to-ground feeder links. The challenging atmospheric conditions of low earth orbit satellite systems, characterized by short coherence times and small spatial coherence widths, necessitate the development of fast and simple wavefront estimation and correction methods. This paper presents an innovative solution to this problem, by proposing a wavefront sensing and correction system that utilizes fast optical phase shifters, optical grating couplers, and compressive sensing techniques to mitigate the effects of turbulence-induced wavefront distortion. Numerical simulations demonstrate that the proposed approach effectively combats wavefront distortion using a small measurement ratio of less than 0.001, where the measurement ratio is the ratio of the number of measurements to the total number of wavefront pixels. In addition, the proposed approach can effectively address phase mismatches between the optical carrier and the local oscillator. |
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| Date de publication | 2023-10-23 |
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| Maison d’édition | IEEE |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 91e823c5-9dcb-456d-aa11-1ec259fd9d1c |
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| Enregistrement créé | 2024-03-12 |
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| Enregistrement modifié | 2024-03-12 |
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