6. August 2019
Successful launch of EDRS-C communications satellite

Mile­stone for the fu­ture of net­worked satel­lite com­mu­ni­ca­tions

Successful launch of the EDRS-C satellite on board an Ariane 5 launcher
Suc­cess­ful launch of the EDRS-C satel­lite on board an Ar­i­ane 5 launch­er
Image 1/5, Credit: Arianespace

Successful launch of the EDRS-C satellite on board an Ariane 5 launcher

On 6 Au­gust 2019 at 21:30 CEST (16:30 Kourou lo­cal time), an Ar­i­ane 5 launch ve­hi­cle launched in­to geo­sta­tion­ary or­bit with the first ded­i­cat­ed satel­lite of the Eu­ro­pean Da­ta Re­lay Sys­tem EDRS.
Integration of the EDRS-C satellite and the Ariane 5 launch vehicle in Kourou
In­te­gra­tion of the EDRS-C satel­lite and the Ar­i­ane 5 launch ve­hi­cle in Kourou
Image 2/5, Credit: 2019 ESA-CNES-Arianespace Optique Vidéo du CSG/S Martin

Integration of the EDRS-C satellite and the Ariane 5 launch vehicle in Kourou

Pri­or to its launch on 6 Au­gust 2019, the EDRS-C com­mu­ni­ca­tions satel­lite was 'mar­ried' to its Ar­i­ane 5 launch ve­hi­cle at the Eu­ro­pean space­port in French Guiana in late Ju­ly.
EDRS overview
EDRS overview
Image 3/5, Credit: TESAT

EDRS overview

Satel­lites from low Earth or­bit (LEO) are usu­al­ly on­ly able to send their da­ta to the ground sta­tion if they are with­in its range. The use of a geo­sta­tion­ary satel­lite (GEO) such as EDRS-C as a re­lay en­ables much longer ra­dio trans­mis­sion times.
EDRS-C antenna test at Airbus in Ottobrunn
EDRS-C an­ten­na test at Air­bus in Ot­to­brunn
Image 4/5, Credit: ESA/S. Corvaja

EDRS-C antenna test at Airbus in Ottobrunn

Air­bus is the in­dus­tri­al prime con­trac­tor for the Eu­ro­pean Da­ta Re­lay Sys­tem (EDRS). In April, 2019, be­fore be­ing shipped, the satel­lite was put through its paces at Air­bus' an­ten­na test cen­tre in Ot­to­brunn. OHB Sys­tem AG in Bre­men de­vel­oped and built the EDRS-C satel­lite.
Acoustic test at IABG in Ottobrunn
Acous­tic test at IABG in Ot­to­brunn
Image 5/5, Credit: OHB System AG

Acoustic test at IABG in Ottobrunn

The acous­tic tests for EDRS-C took place in De­cem­ber 2018 at IABG in Ot­to­brunn.
  • The European Data Relay System (EDRS) is setting new standards for the rapid transfer of large quantities of data from space to Earth.
  • At 21:30 CEST (16:30 local time) on 6 August 2019, the first dedicated EDRS satellite, and the second node in its network, lifted off from the European spaceport in Kourou, French Guiana, on board an Ariane 5 launch vehicle and is on its way to its target geostationary orbit at about 36,000 kilometres above Earth. The satellite separated from the launch vehicle 33 minutes after launch at 22:03 CEST. First contact with EDRS-C followed at 22:10 CEST.
  • EDRS-C will primarily be used for the rapid transfer of high-rate Earth observation data. In this way, the satellite ensures that data acquired worldwide by the Sentinel satellites of the European Copernicus Earth observation programme reach the users even faster. Its core element is the Laser Communications Terminal (LCT), which was developed and manufactured mainly in Germany.
  • Focus: Digitalisation, space, Big Data

With the launch of the first EDRS-C communications satellite on 6 August 2019, a milestone has been reached for the EDRS system. EDRS is a globally unique network of geostationary relay satellites that can deliver data volumes of up to 1.8 gigabits per second to Earth with minimal delay using laser communications. The system is a public-private partnership between the European Space Agency (ESA) and the Prime Contractor, Airbus. With an investment of approximately 235 million euro (61 percent), Germany is the main contributor to this ESA programme. The German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) Space Administration manages this contribution, using funds made available by the Federal Ministry of Economic Affairs and Energy (BMWi), on behalf of the German Federal Government. The EDRS-C satellite was designed, built and tested in Germany. The satellite weighs just under 3.2 tonnes and has a planned service life of 15 years. The German Space Operations Center located at the DLR site in Oberpfaffenhofen, has been contracted by Airbus to control the EDRS-C satellite and its payload on their behalf.

“In the past, satellites were only linked to one or more ground stations. With the development of EDRS, we are making a paradigm shift towards an optically networked satellite infrastructure. With greater security and much higher bandwidth, EDRS enables the transmission of images and data in near-real time,” says Walther Pelzer, DLR Executive Board Member responsible for the Space Administration, who also adds: "EDRS-C incorporates a great deal of high technology from Germany.” Earth observation satellites are providing an increasingly accurate picture of Earth, its environment and its climate. However, they are also producing more and more data that must be made available very quickly so that they can optimally inform and accompany decision-making processes.

The way in which this ‘data superhighway’ will work was demonstrated at a live presentation in Brussels on 10 July 2019. Within a few seconds, data were transmitted from one of the European Sentinel-1 Earth observation satellites to the ground via laser, tracking ships and possible oil leaks. Under normal circumstances, this transfer would take several hours..

The programme’s first communications node, EDRS-A, was launched on 29 January 2016 and provides relay services for data transfer from four Sentinel satellites belonging to the EU Copernicus Earth observation programme. The satellites use EDRS-A services daily and, to date, more than 23,000 inter-satellite links have been successfully used to transfer data to Earth. EDRS-C will now double this capacity.

Following a test and validation phase, the system should be fully operational with EDRS-C by the end of 2019. Technological development has continued alongside the construction and launch of the EDRS satellites, with Germany supporting the further development of the LCT technology as part of ESA’s ARTES ScyLight programmes. Among other things, the data rate of the terminal will be increased from 1.8 to 3.6 gigabits per second, and the potential connection distance increased from 40,000 to 80,000 kilometres.

  • Elisabeth Mittelbach
    Ger­man Aerospace Cen­ter (DLR)
    Com­mu­ni­ca­tions, Ger­man Space Agen­cy at DLR
    Telephone: +49 228 447-385
    Fax: +49 228 447-386
    Königswinterer Str. 522-524
    53227 Bonn
  • Dr Frank Bensch
    Ger­man Aerospace Cen­ter (DLR)

    Space Ad­min­is­tra­tion, Satel­lite Com­mu­ni­ca­tion
    Telephone: +49 228 447-235
    Fax: +49 228 447-709
    Königswinterer Straße 522-524
    53227 Bonn-Oberkassel

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