Broadband internet via satellite aboard Thalys trains
ESApod, audio and video from space
English - May 20, 2008 08:00 - 2 minutes - 12 MB Video - ★★★★★ - 1 ratingScience Technology science ariane astronauts astronomy black hole comet earth envisat ers-2 ground station Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
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The principle is simple: a satellite-tracking antenna on the roof of the train ensures a permanent link with a telecommunications satellite. The link is then relayed inside the train through wireless access points installed in the ceilings of the carriages. A great technological achievement: a continuous, two-way link between a train travelling at 300 kilometres per hour and a satellite at an altitude of 36 000 kilometres. The technology demonstrator was developed with ESA support by the UK-based company 21Net, an operator specialised in providing Internet access via satellite. A consortium, lead by Nokia Siemens Networks and including 21Net, has now implemented a commercial version of the system on Thalys trains.
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