ESA confirms SSTL’s GIOVE-A 'full mission success'
Tuesday 1 April 2008
GIOVE-A, the first satellite in the Europe-led Galileo satellite navigation system celebrates 27 months in orbit this month, marking the completion of its nominal mission lifetime. The European Space Agency (ESA) has confirmed that the pioneering Medium-Earth Orbit satellite is a 'full mission success' and has contracted Surrey Satellite Technology Limited (SSTL), a spin out from the University of Surrey, to continue operations for an additional year as the satellite continues to perform and provide valuable Galileo services.
Under a €28M contract, the 660kg satellite was developed by SSTL for ESA. The satellite was designed, built and tested in a rapid (30 month) programme and was launched, on schedule, on 28 December 2005.
The primary mission was to secure the Galileo frequency filings at the International Telecommunications Union (ITU). The satellite also played a crucial role as a test-bed for the Galileo payload units, providing a representative signal-in-space for ground-based experimentation with Galileo signals and characterizing the radiation environment for the Medium Earth Orbit (MEO) which will be used by all future Galileo satellites.
Following successful launch and commissioning, the GIOVE-A team undertook an intensive six-week payload in-orbit test (IOT) campaign using the 25m dish at the Science Technology and Facilities Council (STFC) Chilbolton station. Through these activities ESA was able to claim the frequency filings three months before the license expired.
Since commissioning the satellite has achieved a remarkably high operational availability with signals being broadcast for 99.8% of the time over the last year. The primary atomic clock, fundamental to all future Galileo satellites in providing highly accurate positioning and time reference signals, has been operating continuously since June 2007.
Thirteen sensor stations around the world are used by ESA to track GIOVE-A and GPS navigation signals and these have demonstrated that Galileo will be a highly accurate navigation system.
In addition to plaudits from ESA, the European Union and the navigation user community, SSTL’s GIOVE-A team has been recognised with the prestigious Royal Aeronautical Society’s (RAeS) Team Silver Award, as well as the Geoffrey Pardoe Space Award for an exceptional contribution to space, demonstrating first class risk and project management skills in designing and placing into orbit a complex, yet cost-effective satellite. The RAeS awards are considered the most prestigious and long-standing awards in global aerospace honouring achievement, innovation and excellence.
SSTL develops innovative technologies to change the economics of space, delivering cost effective satellite missions within rapid timescales. The company is a world leader in the design, manufacture and operation of high performance small satellites with experience gained over more than 25 years and 27 missions launched.
SSTL employs 270 staff working on LEO, GEO and interplanetary missions, turnkey satellite platforms and space-proven satellite subsystems and optical systems. The company also provides know-how transfer and training programmes and consultancy services, and performs studies for ESA, NASA and commercial customers related to platform design, mission analysis and planning.
Based in Guildford, UK, SSTL is owned by the University of Surrey (85%), SSTL staff (5%), and SpaceX of the USA (10%).
Media Enquiries
Peter La, Press Office at the University of Surrey, Tel: +44 (0)1483 689191, or Email mediarelations@surrey.ac.uk