{"id":11344,"date":"2024-10-02T16:59:00","date_gmt":"2024-10-02T14:59:00","guid":{"rendered":"https:\/\/www.cailabs.com\/technical-publications-and-conferences\/"},"modified":"2026-02-10T14:40:41","modified_gmt":"2026-02-10T13:40:41","slug":"enhancing-leo-satellite-uplink-performance-through-spatial-mode-diversity-based-scintillation-mitigation","status":"publish","type":"publication","link":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/enhancing-leo-satellite-uplink-performance-through-spatial-mode-diversity-based-scintillation-mitigation\/","title":{"rendered":"Enhancing LEO satellite uplink performance through spatial mode diversity-based scintillation mitigation"},"content":{"rendered":"\n

Auteurs:<\/strong> Cl\u00e9ment JACQUARD, Henri LEHEC, Thibault MICHEL, Laurie PAILLIER, Maxime JOOS, Julien SAMAAN, Matthieu MEUNIER, Pu JIAN, Guillaume LABROILLE, and Olivier PINEL<\/p>\n\n\n\n

Cailabs, Rennes, FRANCE<\/p>\n\n\n\n

Abstract<\/strong><\/p>\n\n\n\n

Cette publication pr\u00e9sente une approche innovante pour am\u00e9liorer les performances des liaisons optiques montantes entre la Terre et les satellites en orbite basse, en s\u2019appuyant sur la diversit\u00e9 de modes spatiaux pour att\u00e9nuer les effets de la scintillation atmosph\u00e9rique. Les communications optiques satellitaires sont fortement impact\u00e9es par la turbulence atmosph\u00e9rique, qui induit scintillation, errance du faisceau et d\u00e9gradation du taux d\u2019erreur binaire, limitant la fiabilit\u00e9 des signaux montants. Contrairement aux m\u00e9thodes conventionnelles reposant sur la pr\u00e9 compensation du canal ou sur l\u2019utilisation de multiples \u00e9metteurs spatialement s\u00e9par\u00e9s, cette approche exploite la combinaison incoh\u00e9rente de plusieurs modes spatiaux colin\u00e9aires \u00e9mis par un m\u00eame t\u00e9lescope. Les faisceaux transmis r\u00e9sultent de la superposition incoh\u00e9rente de trois \u00e0 six modes spatiaux orthogonaux, obtenue par des d\u00e9calages spectraux, de polarisation et de mise en forme spatiale. Une diversit\u00e9 suppl\u00e9mentaire est apport\u00e9e par l\u2019utilisation de deux t\u00e9lescopes, permettant la g\u00e9n\u00e9ration de jusqu\u2019\u00e0 douze modes incoh\u00e9rents pour une puissance totale \u00e9mise de douze watts en bande C. La mise en \u0153uvre repose sur des composants du commerce et sur la technologie de conversion de lumi\u00e8re multi plans d\u00e9velopp\u00e9e par Cailabs, permettant un d\u00e9ploiement de la diversit\u00e9 spatiale sans contrainte d\u2019alignement utilisateur. Les performances sont valid\u00e9es sur un banc de turbulence atmosph\u00e9rique \u00e9mul\u00e9e, d\u00e9montrant une r\u00e9duction significative des effets de scintillation et une am\u00e9lioration notable de la stabilit\u00e9 et de la qualit\u00e9 du lien montant.<\/p>\n\n\n\n

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Lire la publication<\/a><\/div>\n<\/div>\n\n\n\n

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ICSO 2024<\/p>\n","protected":false},"author":2,"parent":0,"template":"","categorie-publication":[99,102],"class_list":["post-11344","publication","type-publication","status-publish","hentry","categorie-publication-aerospatial-et-defense","categorie-publication-communications-laser"],"acf":[],"yoast_head":"\nPublication technique | Enhancing LEO satellite uplink performance through spatial mode diversity-based scintillation mitigation<\/title>\n<meta name=\"description\" content=\"Am\u00e9liorer les liaisons montantes vers les satellites LEO gr\u00e2ce \u00e0 la diversit\u00e9 des modes spatiaux et \u00e0 la technologie MPLC, afin d\u2019att\u00e9nuer la scintillation et de r\u00e9duire le taux d\u2019erreur binaire (TEB) en conditions atmosph\u00e9riques turbulentes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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