United space in Europe
Delivered by laser
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Delivered by laser

02/12/2014 4721 views 46 likes 330543 ID
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This Sentinel-1A image shows the semi-arid border region between Uzbekistan (top) and Turkmenistan (bottom). The northern part of Sarygamysh Lake, which straddles the border, can be seen in the lower centre of the image.

The lake sits approximately midway between the Caspian Sea (not featured) to the west and the Aral Sea (not featured) to the northeast. The top of the image shows the southern part of Chimboy Lake. In contrast to this semi-arid region, irrigated land is seen on the right-hand side of the image.

This image was captured by Sentinel-1A on 28 November and directly transmitted almost 36 000 km across space by laser to the Alphasat telecommunications satellite in geostationary orbit, which then downlinked the data to Earth. All of this happened in a matter of moments and formed part of a live demonstration at ESA’s space operations centre in Germany.

The demonstration paves the way for using laser technology to deliver large volumes of data almost instantly. Alphasat carries the precursor of the European Data Relay System, Europe’s new space data highway. Having timely access to imagery from the Sentinel-1 mission, for example, is essential for numerous applications such as maritime safety and helping to respond to natural disasters.

More information: Laser link offers high-speed delivery

  • Copernicus data/ESA (2014)
  • Observing the Earth
  • Sentinel-1
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