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Un SIG pour les satellites | MICHBlog

Un SIG pour les satellites

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Je viens de tomber par hasard sur un excellent site Japonnais nommé Satellite Tracker 3D:
http://mada.la.coocan.jp/sat/index.htm

Ce site, full SVG/JS, propose une représentation cartographique en "3D projetée" des satellites et débris principaux gravitant autour de notre terre. A l'aide d'une interface peu intuitive, on peut voir l'état du ciel au dessus de notre tête, et surtout, l'état de la constellation satellite GPS. Pour vos faire gagner un peu de temps, voici le résultat centré au dessus du fuseau horaire GMT + 1:
http://mada.la.coocan.jp/sat/index.htm?c=0&cr=70051&es=1&et=0&gn=0&gr=0&ll=25.718890137074563%2C22.305242522843287&n=1&o=0&sd=0&si=0&sl=0&sm=16777216&sn=0&sp=0&ss=463.45&ta=20177&v=0.

Le résultat est impressionnant. La 3D est très bien faite, le déplacement intuitif, la projection est impeccable mais la distance des serveurs rend la navigation peu fluide... Les dalles sont intéressantes elles aussi car elles sont triangulaires : les transformations de rotation/mise à l'échelle/masque sont effectuées avec SVG.

Saluons quand même le travail réalisé et le choix de la technologie!

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