First SpaceDataHighway laser relay in orbit
Southgate Amateur News
The European Data Relay System’s first laser terminal has reached space
aboard its host satellite and is now under way to its final operating
position.
EDRS-A was launched on 29 January as part of the Eutelsat-9B telecom
satellite at 22:20 GMT (23:20 CET, 04:20 30 January local time) atop a
Proton rocket from Baikonur, Kazakhstan.
The satellite was released at 07:32 GMT, around 36 000 km over the
equator, and is now moving towards its final geostationary position at
9°E over Europe, where it will be operated by Eutelsat.
EDRS is ESA’s most ambitious telecom programme yet, taking the form of a
public–private partnership between ESA and Airbus Defence and Space,
with Airbus operating the service and the DLR German Space
Administration funding the development of the laser terminal.
Dubbed the ‘SpaceDataHighway’, EDRS will revolutionize satcoms as
Europe’s first optical communication network, capable of relaying user
data in near-real time at an unprecedented 1.8 Gbit/s.
Normally, low-orbiting satellites must come within view of a ground
station before they can send their information to Earth.
EDRS instead collects their information from its higher, geo-stationary
position via laser and immediately relays it to the ground, dramatically
improving access to time-critical and potentially life-saving data.
ESA, Airbus and DLR will in a few days begin testing EDRS-A’s general
health and performance, working with the EDRS ground stations in
Germany, Belgium and the UK.
Test links to its first customers, the European Commission’s Copernicus
Sentinel satellites, will then be carried out over several weeks for the
service to begin this summer. Data relay for the International Space
Station will start in 2018.
Completing the system
The second EDRS node, the dedicated EDRS-C satellite, will be launched
next year to join EDRS-A over Europe. A third is planned in 2020 over
the Asia-Pacific region, doubling the system’s coverage.
Learn more about EDRS at www.esa.int/EDRS
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*================================================ Duane Whittingham -
N9SSN (ARES/RACES, EmComm, Skywarn & Red Cross)
http://www.radiodude.info ================================================*
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