The THEOS-2 SmallSAT project for GISTDA (Thailand) is centred around the transfer of knowledge to enable the Thai engineers to design, manufacture, integrate, and test similar satellites in Thailand in the future.   A total of 48 Customer Engineers will be involved in the programme over a period of four years, with training and mentoring taking place in the UK and in Thailand.

THEOS-2 SmallSAT is SSTL’s 20th Know-how Transfer programme and our second collaboration with Thailand - we previously trained customer engineers during the 1995-1997 Thai-Paht mission.

ELSA-d Target

We are supplying a "Target" satellite and avionics for ASTROSCALE's inaugral ELSA-d mission, which will simulate capture of orbital debris and is designed to validate key technologies for end-of-life spacecraft retrieval and disposal services.  

The ELSA-d mission comprises of a "Chaser" satellite and the Target satellite, and will demonstrate key technologies necessary for orbital debris removal such as rendezvous and docking and proximity operations.  ASTROSCALE are designing and manufacturing the Chaser in Tokyo using avionics from SSTL.  

Click here to watch ASTROSCALE's ELSA-d mission animation.

Deployable SAR antenna payload

SSTL and Oxford Space Systems have been awarded National Space Technology Programme funding to develop an innovative and stowage-efficient Synthetic Aperture Radar (SAR) payload.  

The innovative SAR payload will be exclusively developed in the UK and will comprise of a highly stowage-efficient deployable antenna from OSS and a high bandwidth radar instrument and RF system from SSTL.  Successful completion of the project will enable the OSS antenna to be flown on a future demonstration mission from SSTL targeted for a 2021 launch.

Galileo Navigation Payloads

We have already delivered 22 navigation payloads for the deployment phase of Galileo, Europe's satellite navigation system and are now under contract to build a further 12 payloads.

OHB System AG is the prime contractor and builder of the spacecraft platform and SSTL has full responsibility for the navigation payloads, the brains of Galileo's navigation system.


We are supplying a small geostationary satellite platform for the first “EUTELSAT QUANTUM” class telecommunications spacecraft, due to launch in 2019.  We are under contract to prime contractor, Airbus Defence and Space, who are supplying the flexible payload for the spacecraft.  

EUTELSAT QUANTUM will be SSTL's first geostationary satellite platform and the new spacecraft design will represent a first in the commercial satellite industry, by enabling the complete electronic synthesis of “receive” and “transmit” coverages in the Ku-band. 


We are supplying a Multi Spectral Imager (MSI) Instrument for the EarthCARE mission, ESA's third Earth Explorer Core Mission. 


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