Quand satellite et poésie font bon ménage.

Par Gilles F1EFW

Le tout premier satellite universitaire irlandais EIRSAT-1, est en orbite autour de notre planète depuis le 1 décembre 2023, il transporte un poème gravé sur la couverture extérieure du module de déploiement d’antenne. Ce texte a été spécialement écrit par des jeunes et s’intitule All Ways Home.

Ce satellite construit par une équipe d’étudiants et de professeurs du University College de Dublin est maintenant en fin de vie, il a brillamment rempli ses missions d’observations et va bientôt rentrer et bruler dans l’atmosphère terrestre.
Afin de saluer la communauté des radioamateurs, EIRSAT-1 transmet également le poème dans ses données de télémétrie.

Réception du satellite EIRSAT-1 et enregistrement des données de télémétrie.

C’est une simple clé RTL-SDR et le logiciel SDRConsole qui vont permettre la réception du satellite lors de l’un de ses passages.

Le son reçu est redirigé (VirtualCable) vers le modem High-Speed SoundModem de UZ7HO, les données codées en hexadécimal s’affichent dans la fenêtre du modem.

Décodage des données hexadécimales.

Pour décoder les trames de télémétries, nous allons utiliser un convertisseur Hexadécimal vers Texte (Hex to Ascii)
Il faut faire un copié/collé de la fenêtre modem vers une application en ligne (par exemple : https://www.rapidtables.com/convert/number/hex-to-ascii.html) ou tout autre outil de conversion.

1: [EIRSAT-1 CC12RS] [12:11:38R]
00 10 24 24 18 00 08 02 D1 DB 00 CD 10 03 19 0D 20 35 2F 37 20 54 68 6F 73 65 20 77 69 6E 64 2D 73 77 65 70 74 20 77 6F 72 64 73 3B 20 76 6F 69 63 65 73 20 63 6C 75 74 63 68 65 64 20 74 6F 20 6F 75 72 20 77 61 72 6D 74 68 2C 20 43 6F 75 72 61 67 65 20 70 6C 75 63 6B 65 64 20 66 72 6F 6D 20 63 6F 6E 76 65 72 73 61 74 69 6F 6E 2E 20 42 72 65 65 7A 65 62 72 65 61 74 68 2C 20 66 65 65 6C 20 74 68 65 20 62 6C 75 73 68 20 64 75 73 74 20 6D 79 20 63 68 65 65 6B 73 2C 20 74 68 65 20 73 74 61 72 73 20 6C 69 6B 65 20 6F 6C 64 20 70 68 6F 74 6F 73 2E 20 4C 65 61 76 65 20 74 68 65 20 70 6F 72 63 68 20 6C 69 67 68 74 20 6F 6E 2E 20 20 20 20 20 20 20 20 1F B2 07 FF 00 00 02 9B 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

EIRSAT-1Ireland’s First Satellite!

1/7 « All Ways Home » – https://www.eirsat1.ie/space-poetry

4/7 Tout ce que je veux, c’est le parfum délicieux, les chaussures bleu foncé boueuses et l’herbe abîmée par la lumière des étoiles, la maison. Lune de fraise dans le mystique bleu noir sans nuages, un jour tout pourrait être pluie.

5/7 Ces mots balayés par le vent ; des voix agrippées à notre chaleur, du courage arraché à la conversation. Souffle de brise, sens la rougeur saupoudrer mes joues, les étoiles comme de vieilles photos. Laisse la lumière du porche allumée.

Le but étant de recevoir et décoder les 7 strophes de ce poème satellitaire !
Bon amusement à tous.