in Space

SSTL to build Galileo navigation payloads

Posted 23 June 2017 · Add Comment

Under an Authority to Proceed signed with prime contractor OHB-System AG today, Surrey Satellite Technology Ltd (SSTL) is commencing work on building eight navigation payloads for Galileo, Europe's global navigation satellite system.



The contract will be worth approximately €140m, and it is a continuation of a long and successful cooperation between SSTL and OHB-System AG, with the pairing having previously built 22 FOC satellites for the Galileo Constellation. 

Gary Lay, SSTL’s Director of Navigation said “SSTL is delighted to have been selected to build the third batch of navigation payloads needed to complete the initial Galileo Constellation. I am confident that the OHB-SSTL solution offered the lowest risk and best value for money, and I believe that our selection as payload providers for the third time in succession demonstrates a high regard for our work.”

SSTL’s state-of-the-art Galileo FOC payload comprises different units including European sourced atomic clocks, navigation signal generators, high power travelling wave tube amplifiers and antennas.

SSTL’s payload proposal for Batch 3 is for a recurrent build of the existing payload, with an evolution of the atomic clocks to incorporate advances made under the European GNSS Evolution Programme.  

Fourteen of SSTL’s Galileo FOC navigation payloads are currently operational in orbit, with a further eight payloads already delivered to OHB for integration and test. 

SSTL has been involved in the Galileo programme since 2003 with the design and build of GIOVE-A, Galileo’s pathfinder mission. GIOVE-A was launched in 2005 and is still operational today, providing valuable data about the radiation environment in Medium Earth Orbit. An experimental GPS receiver on board GIOVE-A is also used to map out the antenna patterns of GPS satellites for use in planning navigation systems for future high altitude missions in Geostationary orbit and beyond into deep space.
 

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