European Data Relay System Aims for Global Coverage

The European Data Relay System (EDRS) is a game-changer for global connectivity. It's a satellite-based data relay system that aims to provide seamless and uninterrupted data transmission between geostationary satellites and low-Earth orbit satellites.

EDRS is designed to bridge the gap between these two types of satellites, which operate at different altitudes and have different orbits. This ensures that data is transmitted quickly and efficiently, without any interruptions or delays.

The system consists of two satellites, EDRS-A and EDRS-B, which were launched in 2016 and 2019 respectively. They are equipped with laser transceivers that enable them to transmit data at speeds of up to 1.8 Gbps.

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The European Data Relay System (EDRS) has a robust space segment that enables high-speed data transmission between Low Earth Orbit (LEO) satellites and the ground. EDRS-A, the first payload, was launched on Eutelsat 9B in January 2016 and is positioned at 9°E.

The initial plan was to develop two more spacecraft to complement the system from 2020 onwards, providing complete coverage of the Earth and ensuring long-term system redundancy beyond 2030. EDRS-C, launched on August 6, 2019, is positioned at 31°E and carries a laser communication terminal and a Ka band inter-satellite link.

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A new relay terminal for LEO user satellites, hosted on the Pléiades Neo Earth observation satellites, was launched and tested in 2021. The commissioning of EDRS-D as the third satellite over Japan is planned to provide a node for the Asia-Pacific region.

Here's a brief overview of the EDRS space segment:

The EDRS space segment provides direct coverage for LEO satellites over Europe, the Middle East, Africa, the Americas, Asia, and the Poles. This enables longer data-transmission periods to Earth, significantly increasing the availability of the communication channel.

The European Data Relay System (EDRS) is a Public Private Partnership between the European Space Agency (ESA) and Airbus Defence & Space (ADS). EDRS provides data relay services for the Sentinel satellites since 2016.

EDRS has over one million minutes of communications with more than 75,000 successful inter-satellite links as of May 2023. This is a testament to the system's reliability and efficiency.

The implementation of EDRS is a collaborative effort between ESA and ADS, with ESA funding the infrastructure development and being the anchor customer through the Sentinel satellite missions.

EDRS, the European Data Relay System, is being implemented as a Public Private Partnership (PPP) between the European Space Agency (ESA) and Airbus Defence & Space (ADS). This partnership is a key aspect of the system's development.

The ESA funds the infrastructure development and is the anchor customer through the Sentinel satellite missions. This ensures a steady stream of data and a clear direction for the system's development.

ADS, on the other hand, carries the overall responsibility for the implementation of the space segment, including launch, as well as the ground segment. This hands-on approach allows ADS to take ownership of EDRS and provide data transmission services to ESA and customers worldwide.

As of May 2023, EDRS has already achieved impressive milestones, with over one million minutes of communications and more than 75,000 successful inter-satellite links. This demonstrates the system's reliability and effectiveness.

Here are some notable examples of other data relay systems that have been implemented:

The operations of EDRS began with the Sentinel-1 and -2 satellites of the Copernicus Programme, which provide data for geo-information products and services across Europe and the globe.

EDRS has been providing data relay services for these satellites since 2016, facilitating the rapid downlink of large volumes of data, including imagery, voice, and video.

This data relay service has greatly improved the efficiency of data transmission for the Sentinel satellites, enabling them to operate more effectively.

The "Made in Germany" label is a badge of honor for the European Space Agency's EDRS project. EDRS is operated in a public-private partnership with Airbus Defence and Space.

The control of the payloads, as well as the control of EDRS-C, takes place at DLR's German Space Operations Centre in Oberpfaffenhofen. This is a hub of activity where experts work together to ensure the project's success.

The development and flight testing of the LCT technology from Tesat-Spacecom GmbH was funded by the German Space Agency at DLR with funds from the German Federal Ministry for Economic Affairs and Climate Action. This investment has paid off in the form of cutting-edge technology.

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The EDRS-PPP project was implemented by ESA with German funding through the ARTES programme. This collaboration has enabled the project to move forward with confidence.

The development of the ground operating system was funded by the BMWK and the Bavarian State Ministry. This support has been instrumental in bringing the project to life.

The EDRS-C satellite is based on the SmallGeo platform manufactured by OHB, the development of which was also supported with German funds through the ARTES programme. This platform has proven to be a reliable and efficient choice.

The European Data Relay System (EDRS) has made significant strides in its launch and network development. The second satellite to join the EDRS constellation, EDRS-C, was launched by Arianespace on August 6.

EDRS-C will operate in geostationary orbit at 31 degrees East longitude, joining its "sister" EDRS-A launched in January 2016. The satellites can transmit data at a rate of up to 1.8 Gbit/s.

The geostationary position of EDRS-C will enable it to maintain an almost constant connection with low-Earth orbiting satellites, reducing delays of up to 90 minutes. This is a significant improvement over traditional line-of-sight transmissions.

A unique perspective: C Band Frequencies

Arianespace successfully launched the European Data Relay System Satellite, EDRS-C, on August 6, at 21:30 CEST (19:30 UTC). The satellite was launched on board an Ariane 5, together with a second passenger, Intelsat 39.

The EDRS-C satellite will operate in geostationary orbit, at 31 degrees East longitude, joining its "sister" EDRS-A, launched in January 2016. This position enables the constellation to maintain an almost constant connection with low-Earth orbiting satellites.

The EDRS satellites can transmit data at a rate of up to 1.8 Gbit/s, which is crucial for delivering information in almost real time. This technology uses innovative laser technology to cut the time needed for Earth observation satellites.

The EDRS-C satellite has been manufactured by OHB System AG based on a SmallGEO Platform. It also hosts a Ka-band payload called HYLAS 3, which is designed to provide satellite communications services over Africa and the Middle-East.

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