{"id":282899,"date":"2021-06-24T17:45:32","date_gmt":"2021-06-24T14:45:32","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/european-system-speeds-data-flow-with-50000-links\/"},"modified":"2021-06-24T17:45:32","modified_gmt":"2021-06-24T14:45:32","slug":"european-system-speeds-data-flow-with-50000-links","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/european-system-speeds-data-flow-with-50000-links\/","title":{"rendered":"#European system speeds data flow with 50,000 links"},"content":{"rendered":"

“#European system speeds data flow with 50,000 links<\/strong>”<\/p>\n

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\n The first node of the European Data Relay System, EDRS-A, is shown in geostationary orbit over Copernicus Sentinel-1 and -2, and the International Space Station. Credit: ESA
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Valuable data is flowing rapidly from Earth observing satellites back to the planet, thanks to the most sophisticated laser communication network ever built.<\/p>\n

Day-and-night radar images and multispectral high-resolution images of vegetation, soil and water cover, inland waterways and coastal areas\u2014as well as information for emergency services\u2014are arriving back at Earth in almost real time.<\/p>\n

Some 50,000 links have now been established between four low-Earth orbit satellites and the two geostationary communication satellites that form the European Data Relay System (EDRS).<\/p>\n

This geostationary position\u2014nearly 36,000 kilometers above Earth\u2014enables the communication satellites to maintain an almost constant connection with Earth-observation satellites, which are closer to the planet’s surface and circle the Earth app<\/a>roximately every 90 minutes.<\/p>\n

The EDRS satellites use lasers to communicate with Earth-observation satellites and beam their data back to Europe using radio-frequency transmissions in almost real time. Communication without these relay satellites would result in delays of up to 90 minutes.<\/p>\n

The four Earth-observation satellites communicating with EDRS are Sentinel satellites belonging to the EU’s Copernicus program. EDRS includes radio inter-satellite link capability, which will also be used to relay information from the International Space Station and other commercial satellites.<\/p>\n


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