Search


	Podcast:		ESApod, audio and video from space
	Episode:		Broadband internet via satellite aboard Thalys trains
	Category:		Science & Medicine
	Duration:		00:02:14
	Publish Date:		2008-05-20 03:00:00
	Description:		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. ESApod video programme
	Total Play:		0