The Alphasat programme is a major cooperation between the public and private sectors. With Alphasat, Inmarsat will be the first commercial customer for the Alphabus platform, the new European high-power telecommunications platform jointly developed by Astrium and Thales Alenia Space and initiated by a partnership between ESA and CNES (Centre National d'Etudes Spatiales) as a coordinated European response to the increased market demand for larger telecommunication payloads, for new broadband, broadcasting and mobile communications services.
The Alphabus Alphasat programme represents an expenditure of € 440 million by 16 ESA Member States. Under the development schedule, Alphasat will be available for launch in 2012.
Positioned at 25 degrees East, providing extended coverage to Africa, Europe, the Middle-East and parts of Asia , Alphasat will supplement the existing Inmarsat satellite constellation and offer the opportunity for new and advanced services.
Astrium Satellites is the industrial prime contractor for the development of the satellite, including its advanced L-Band mission, which will augment the successful services already being offered by Inmarsat's Broadband Global Area Network (BGAN). Key to the implementation of this payload is the advanced Integrated Processor, being developed by Astrium Satellites in the UK, which will provide payload flexibility enabling full coverage reconfiguration and flexible power allocation.
Thanks to this increased efficiency of spectrum use and payload flexibility the Alphasat will further enable robust communications in crisis and disaster emergencies, allowing potential connection of houses, schools and businesses in remote locations and communications links for governments with dispersed populations and improve essential voice and data communications for a wide range of industry sectors such as media, maritime, oil and gas.
For this application, the flexibility of the Alphabus platform design will be demonstrated by implementing a 'geomobile configuration' with a 90 degree change to the satellite flight orientation and a large deployable reflector (12 metres in diameter).
In addition to the Inmarsat payload, Alphasat will also carry three ESA-provided Technology Demonstration Payloads (TDPs): an advanced star tracker using active pixel technology, an optical laser terminal for geostationary to low-Earth orbit communication at high data rates, and a dedicated payload for the characterisation of transmission performance in the Q-V band in preparation for possible commercial exploitation of these frequencies. A fourth TDP for space environments and effects monitoring is also under discussion.
Dominique Detain | alfa
Five developments for improved data exploitation
19.04.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI
Smart Manual Workstations Deliver More Flexible Production
04.04.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
26.04.2017 | Life Sciences
26.04.2017 | Physics and Astronomy
26.04.2017 | Earth Sciences