ENP Newswire -
Release date- 20122013 - Terma provided a real-time simulator and test support to ESA's GAIA mission and was involved in onboard software development and validation.
During the 2006-2013 time span, Terma provided a real-time simulator and test support to ESA's GAIA mission and was involved in onboard software development and validation.
Today, the billion-star surveyor spacecraft was successfully launched from ESA's Spaceport in Kourou,
GAIA - Global Astrometric Interferometer for Astrophysics - will make the most precise three-dimensional map of our Galaxy ever by surveying more than a thousand million stars. It will monitor each of its target stars about 70 times.
It will precisely chart each star's positions, distances, movements, and changes in brightness and it will map their motions, luminosity, temperature, and composition. It is expected to discover hundreds of thousands of new celestial objects, such as extra-solar planets and brown dwarfs, and observe hundreds of thousands of asteroids within our own Solar System. The mission will also study about 500.000 distant quasars.
This huge stellar census will provide the data needed to tackle an enormous range of important problems related to the origin, structure, and evolutionary history of our Galaxy.
GAIA contains two optical telescopes that work with three science instruments to precisely determine the location of stars and their velocities, and to split their light into a spectrum for analysis.
GAIA will map the stars from an orbit around the Sun, at a distance of 1.5 million km beyond Earth's orbit. The spacecraft is controlled from
'Terma's involvement in developing the GAIA spacecraft has paved the way for Terma Space to enter into a number of new missions being under development today and to be launched over the next few years such as BepiColombo, Meteosat Third Generation, and Solar Orbiter,' said
The integration of the GAIA payload took place at Astrium, Toulouse (
Terma provided uninterrupted on-site support for the Electrical Ground Support Equipment (EGSE) test bench development & operations. Terma's involvement spanned the duration of the payload Assembly Integration and Test (AIT) activities, from 2007 until early 2013, when the integration campaign culminated with a 40-day thermal-vacuum test at the Centre Spatial de
All of this is made feasible by the onboard software, which takes constant measurements of drift from the Video Processor Units and converts them into inputs to the unique micro propulsion system to perfectly tune the spin rate. 1000 times per second, every star entering the field of view must be analyzed for type and magnitude, prioritized, and then allocated a detection window that will follow it as it transits the CCDs. Terma was involved in the validation of this complex onboard processing as part of the software validation group.
Terma was also involved in developing the GAIA Real-Time Simulator (RTS), together with
A Numerical Bench, in which all spacecraft components, including the Control and Data Management Unit (CDMU), are simulated. The bench is used for AIT simulation activities, Independent Software Validation (ISV), and as development platform for the
A Hybrid Bench, in which the real CDMU hardware is used and other simulated spacecraft components are gradually replaced by their respective hardware. The bench is used for Avionics Model and Spacecraft Proto-Flight Model AIT activities.
Terma's responsibility was to develop the CDMU simulator. The development of the CDMU Simulator draws on the experience gained with developing Software Validation Facilities (SVFs) for the Herschel/Planck,
The kickoff for the Gaia RTS project was in
Terma develops products and systems for defense, non-defense, and security applications, including command and control systems, radar systems, self-protection systems for ships and aircraft, space technology, and advanced aerostructures for the international aircraft industry.
The group, headquartered at
Further information about Terma is available at www.terma.com
Tel: +45 2022 6091
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