View source for Surrey Satellite Technology

{{Short description|British aerospace company}}

{{Infobox company 
| name   = Surrey Satellite Technology Ltd 
| logo   = SSTL-Low-Res-Logo.png
| type   = [[Subsidiary company|Subsidiary]] 
| key_people     = [[Martin Sweeting|Professor Sir Martin Sweeting]], Group Executive Chairman<br/> 
Andrew Cawthorne, MD from December 2024
| industry       = [[Aerospace engineering|Aerospace]] 
| products       = [[Satellites]] and related services 
| revenue        = £2.6m on £92m sales for FY 2011.<ref>{{cite news|last=de Selding|first=Peter|url=https://spacenews.com/sstl-revenues-and-profit-down-sharply/|title=SSTL Revenues and Profit Down Sharply|publisher=[[Space News]] |date=15 February 2007|access-date=27 January 2023}}</ref> £30m turnover, £1.5m pre-tax profit were expected for FY 2006.<ref>Moore, Malcolm and Roger Highfield. [https://web.archive.org/web/20071231074533/http://www.telegraph.co.uk/money/main.jhtml?xml=/money/2005/12/29/cnipod29.xml "How to build space satellites out of iPods."] ''The Daily Telegraph'', 29 December 2005.</ref> 
| num_employees  = 350 
| foundation     = [[Guildford]], [[Surrey]], UK (1985)<ref>{{cite web|title=Surrey Satellite Technology Limited (SSTL)|url=https://www.ukspacefacilities.stfc.ac.uk/Pages/Surrey-Satellite-Technology-Limited-(SSTL).aspx|access-date=January 27, 2023|publisher=UK Research and Innovation}}</ref>
| location       = [[Guildford]], [[Surrey]] 
| homepage       = [http://www.sstl.co.uk www.sstl.co.uk]
}}

'''Surrey Satellite Technology Ltd''', or '''SSTL''', is a company involved in the manufacture and operation of [[small satellite]]s. A spin-off company of the [[University of Surrey]], it is presently wholly owned by [[Airbus Defence and Space]].

The company began out of research efforts centred upon [[amateur radio satellite]]s, known by the UoSAT (University of Surrey Satellite) name or by an [[OSCAR]] (Orbital Satellite Carrying Amateur Radio) designation. SSTL was founded in 1985, following successful trials on the use of [[commercial off-the-shelf]] (COTS) components on satellites, cumulating in the [[UoSAT-1|''UoSat-1'']] test satellite. It funds research projects with the university's [[Surrey Space Centre]], which does research into [[satellite]] and [[Outer space|space]] topics.

In April 2008, the University of Surrey agreed to sell its majority share in the company to European multinational conglomerate [[EADS Astrium]]. In August 2008, SSTL opened a US subsidiary, which included both offices and a production site in [[Denver]], [[Colorado]];<ref name=sstlpr200808>[http://www.sstl.co.uk/News_and_Events/Latest_News/?story=1226 "Surrey Satellite Technology US opens for business."] {{Webarchive|url=https://web.archive.org/web/20120728100313/http://www.sstl.co.uk/news_and_events/latest_news?story=1226 |date=28 July 2012 }}, SSTL press release, 5 August 2008.</ref> in 2017, the company decided to discontinue manufacturing activity in the US, winding up this subsidiary.<ref name=sn20170630/>

SSTL was awarded the Queen's Award for Technological Achievement in 1998, and the [[Queen's Awards for Enterprise]] in 2005. In 2006 SSTL won the ''[[Times Higher Education]]'' award for outstanding contribution to innovation and technology.<ref>[http://www.ee.surrey.ac.uk/Personal/L.Wood/cleo/awards/thes/ "SSTL wins ''Times Higher award''."] ''Surrey University'', 16 November 2006.</ref> In 2009, SSTL ranked 89 out of the 997 companies that took part in the ''Sunday Times Top 100 companies to work for''.<ref>[http://www.engineeringbritain.com/space/archives/220-SSTL-earn-Sunday-Times-Award.html "SSTL earn Sunday Times Award."] {{webarchive|url=https://archive.today/20090427012707/http://www.engineeringbritain.com/space/archives/220-SSTL-earn-Sunday-Times-Award.html |date=27 April 2009 }} ''engineeringbritain.com'', 17 March 2009.</ref>

In 2020, SSTL started the creation of a telecommunications spacecraft called [[Lunar Pathfinder]] for lunar missions.<ref>{{Cite web|last=Amos|first=Jonathan|url=https://www.bbc.com/news/science-environment-51378320|title=Green light for UK commercial telecoms Moon mission|date=5 February 2020|publisher=BBC News|access-date=16 September 2022}}</ref> It will be launched in 2025 and used for data transmission to Earth.<ref>{{cite web|url=https://www.sstl.co.uk/what-we-do/lunar-mission-services|title=Lunar Mission Services from SSTL|work=Surrey Satellite Technology|access-date=16 September 2022}}</ref>

== History ==
===Background and early years===
During the early decades of the [[Cold War]] era, access to space was effectively the privilege of a handful of [[superpower]]s; by the 1970s, only the most affluent of countries could afford to engage in space programmes due to extreme complexity and expenses involved.<ref name = "off history"/> Despite the exorbitant costs to produce and launch, early satellites could only offer limited functionality, having no ability to be reprogrammed once in orbit. During the late 1970s, a group of researchers at the University of Surrey, headed by Martin Sweeting, were experimenting with the use of [[commercial off-the-shelf]] (COTS) components in satellite construction; if found viable, such techniques would be highly disruptive to the established satellite industry.<ref name = "off history">{{cite web |url = https://www.sstl.co.uk/about-us |title = About Us |publisher = Surrey Satellite Technology |access-date = 18 December 2019}}</ref>

The team's first satellite, [[UoSAT-1]], was assembled in a small university lab, using in a cleanroom fabricated from [[B&Q]] and integrating [[printed circuit boards]] designed by hand on a kitchen table.<ref name = "off history"/> In 1981, UoSAT-1 was launched with [[NASA]]'s aid; representing the first modern reprogrammable small satellite, it outlived its planned three-year life by more than five years. Having successfully demonstrated that relatively compact and inexpensive satellites could be rapidly built to perform sophisticated missions, the team decided to take further steps to commercialise their research.<ref name = "off history"/>

During 1985, Surrey Satellite Technology Ltd (SSTL) was founded in [[Guildford]], [[Surrey]], [[United Kingdom]] as a spin-off venture from the university.<ref name = "off history"/> Since its founding, it has steadily grown, having worked with numerous international customers to launch over 70 satellites over the course of three decades.<ref name = "off history"/>

===Growth and restructuring===
In 2002, SSTL moved into [[remote sensing]] services with the launch of the [[Disaster Monitoring Constellation]] (DMC) and an associated child company, [[DMC International Imaging]]. Some of these satellites also include other imaging payloads and experimental payloads: onboard hardware-based image compression (on BilSAT), a [[GNSS reflectometry|GPS reflectometry]] experiment and [[CLEO (router)|onboard Internet router]] (on the UK-DMC satellite). The DMC satellites are notable for communicating with their ground stations using the [[Internet Protocol]] for payload data transfer and command and control, so extending the Internet into space, and allowing experiments with the [[Interplanetary Internet]] to be carried out.<ref>[http://personal.ee.surrey.ac.uk/Personal/L.Wood/publications/ Experience with delay-tolerant networking from orbit], W. Ivancic ''et al.'',International Journal of Satellite Communications and Networking, vol 28, issues 5-6, pp. 335-351, September–December 2010.<!-- free to read online but also  http://dx.doi.org/10.1002/sat.966 --></ref><ref>[http://www.sstl.co.uk/News_and_Events/Latest_News/?story=1254 UK-DMC satellite first to transfer sensor data from space using 'bundle' protocol] {{Webarchive|url=https://web.archive.org/web/20120426220355/http://www.sstl.co.uk/News_and_Events/Latest_News/?story=1254 |date=2012-04-26 }}, press release, [[Surrey Satellite Technology Ltd]], 11 September 2008.</ref> Many of the technologies used in the design of the DMC satellites, including Internet Protocol use, were tested in space beforehand on SSTL's earlier [[UoSAT-12 satellite]].<ref name="hogie">{{Cite journal |doi = 10.1016/j.comnet.2004.08.005|title = Using standard Internet Protocols and applications in space|journal = Computer Networks|volume = 47|issue = 5|pages = 603–650|year = 2005|last1 = Hogie|first1 = Keith|last2 = Criscuolo|first2 = Ed|last3 = Parise|first3 = Ron}}</ref><ref name="hogie2">K. Hogie, ''et al''., [http://www.csc.com/cscworld/backissues Putting more Internet nodes in space] {{webarchive|url=https://web.archive.org/web/20081116071516/http://www.csc.com/cscworld/backissues/ |date=2008-11-16 }}, CSC World, Computer Sciences Corporation, pp. 21-23, April/June 2006.</ref>

During June 2004, [[United States|American]] private space company [[SpaceX]] arranged to acquire a 10% stake in SSTL from Surrey University; speaking on the purchase, [[Elon Musk]] stated: "SSTL is a high-quality company that is probably the world leader in small satellites. We look at this as more a case of similar corporate cultures getting together".<ref>{{cite web |url=https://spacenews.com/space-x-takes-10-percent-stake-surrey-satellite-technology/ |title= Space X Takes 10 Percent Stake in Surrey Satellite Technology |last= de Selding |first= Peter B |date= 29 June 2004 |publisher= Space News}}</ref> The University of Surrey then awarded Musk an [[honorary doctorate]]. In April 2008, the University of Surrey agreed to sell its majority share in SSTL, roughly 80% of the company's capital, to European multinational conglomerate [[EADS Astrium]].<ref>[http://portal.surrey.ac.uk/press/0408/070408 "EADS Astrium signs an agreement to acquire Surrey Satellite Technology Limited from the University of Surrey."]{{webarchive|url=https://web.archive.org/web/20080416155340/http://portal.surrey.ac.uk/portal/page?_pageid=799,1960672&_dad=portal&_schema=PORTAL |date=2008-04-16 }} ''University of Surrey'', 7 April 2008.</ref> SSTL has remained an independent entity despite all shares having been purchased by [[Airbus]], the parent company of EADS Astrium.<ref name = "off history"/>

During 2005, SSTL completed construction of ''[[GIOVE]]-A1'', the first test satellite for Europe's [[Galileo (satellite navigation)|Galileo]] space navigation system.<ref>{{cite web |url = https://www.flightglobal.com/galileo-navigation-satellite-provider-to-be-dismantled/77665.article |title = Galileo navigation satellite provider to be dismantled |publisher = [[Flight International]] |first = Rob |last = Coppinger |date = 30 November 2007}}</ref><ref>{{cite web |url = https://www.flightglobal.com/space/ec-attempts-galileo-political-bypass-with-preferred-bidders/82974.article |title = EC attempts Galileo political bypass with preferred bidders |publisher = [[Flight International]] |first = Rob |last = Coppinger |date = 25 September 2008}}</ref> In 2010 and 2012, the firm was awarded contracts to supply 22 navigation payloads for Galileo, the last of which was delivered during 2016.<ref>{{Cite news |url=https://www.bbc.co.uk/news/science-environment-36286633 |title= SSTL ships 'last' navigation payload for Galileo |last= Amos |first= Jonathan |date= 13 May 2016 |publisher= BBC News}}</ref> During 2017, SSTL was awarded a contract to supply a further 12 payloads; this was viewed as a coup in light of the political backdrop surrounding [[Brexit]].<ref>{{cite web |url = https://www.sstl.co.uk/media-hub/latest-news/2017/sstl-celebrates-galileo-navigation-payload-order |title = SSTL celebrates Galileo navigation payload order |publisher = Surrey Satellite Technology |date = 12 December 2017}}</ref><ref>{{cite web |url = https://www.flightglobal.com/analysis/analysis-surrey-satellites-dodges-brexit-bullet/124620.article |first = Dan |last = Thisdell |title = ANALYSIS: Surrey Satellites dodges Brexit bullet |publisher = [[Flight International]] |date = 28 June 2017}}</ref>

During the 2010s, SSTL has been working on various improvements in its satellite technology, such as [[synthetic-aperture radar]] (SAR) as well as smaller and lighter units. According to Luis Gomes, SSTL's head of Earth observation, micro-satellites translate to a lower cost of design, construction and launch, albeit at a cost of a more frequent failure rate, in comparison to larger and more costly units.<ref>{{cite web |url = https://www.flightglobal.com/space/surrey-satellite-takes-the-small-route-to-the-high-ground/98677.article |title = Surrey Satellite takes the small route to the high ground |publisher = [[Flight International]] |date = 7 March 2011 |first = Dan |last = Thisdell}}</ref> These features has been marketed towards customers such as the DMC.<ref>{{cite web |url = https://www.flightglobal.com/space/surrey-satellite-pushes-smaller-lighter-cheaper-principle-down-to-50kg/111237.article |title = Surrey Satellite pushes smaller-lighter-cheaper principle down to 50&nbsp;kg |publisher = [[Flight International]] |first = Dan |last = Thisdell |date = 1 October 2013}}</ref>

In summer 2008, Surrey formed an American subsidiary, ''Surrey Satellite Technology-US'', in [[Douglas County, Colorado]], intent on serving US customers in the [[smallsat]] market. In June 2017, SSTL announced their intention to close their Colorado satellite manufacturing facility, opting to instead consolidate all of its manufacturing activity in the UK. Sarah Parker, SSTL's managing director, said that the rapid growth of new competing firms in the small satellite sector had changed the marketplace, necessitating reorganisation, which has included the increased use of [[outsource|outsourcing]].<ref name=sstlpr200808/><ref name=sn20170630>{{cite web |url = https://spacenews.com/sstl-closing-us-factory-centralizing-manufacturing-back-in-uk/ |title = SSTL closing US factory, centralizing manufacturing back in UK |publisher = Space News |first = Caleb |last = Henry |date = 30 June 2017 |quote=SSTL formed its U.S. subsidiary, Surrey Satellite Technology-US, in 2008, and opened a factory in the Denver suburb of Englewood, Colorado, to specifically focus on the vibrant U.S. small satellite market. At one time, the company had ambitions of growing that office to upwards of 200 people, but growing competition in small satellite manufacturing scuttled those plans.}}</ref>

== Satellites ==
* [[Eutelsat Quantum]] satellite platform, consisting of a central thrust tube housing a bipropellant [[chemical propulsion system]], GEO momentum wheels and gyro. Designed to be reconfigurable via software definitions, enabling it to change roles and functions. Delivered to Airbus in Toulouse during January 2019 for assembly and testing.<ref>{{cite web |url=http://spacenews.com/eutelsat-esa-taking-a-quantum-leap-toward-fully-software-defined-satellite/ |title= Eutelsat, ESA Taking a 'Quantum' Leap Toward Fully Software-defined Satellite |last= de Selding |first= Peter B |date= 9 July 2015 |publisher= Space News}}</ref><ref>{{cite web |url = https://news.eutelsat.com/pressreleases/universal-eutelsat-quantum-satellite-to-revolutionise-telecoms-markets-1190652 |title = 'Universal' Eutelsat Quantum satellite to revolutionise telecoms markets |publisher = Eutelsat |date = 9 July 2015}}</ref> Quantum is SSTL's first geostationary satellite platform.<ref>{{cite web |url=https://www.sstl.co.uk/space-portfolio/missions-in-build/2010-2020/eutelsat-quantum |title=EUTELSAT QUANTUM |website=Surrey Satellite Technology |access-date=31 July 2021}}</ref>
* [[COSMIC-2|COSMIC-2/FORMOSAT-7]] for [[National Space Organization]] ([[Taiwan]]) and NOAA (US).  Atmospheric limb sounding by [[GNSS radio occultation]], [[ionosphere|ionospheric]] research; follow-on mission to [[FORMOSAT-3|COSMIC/FORMOSAT-3]].<ref>{{cite web |url = https://www.sstl.co.uk/media-hub/latest-news/2019/six-formosat-7-satellites-ship-to-launch-site |title = Six FORMOSAT-7 satellites ship to launch site |publisher = Surrey Satellite Technology |date = 17 April 2019}}</ref>
* VESTA-1 a technology demonstration mission for [[Honeywell]] launched December 2018 that will test a new two-way VHF Data Exchange System (VDES) payload for the exactEarth advanced maritime satellite constellation. Launched 3 December 2018.<ref>{{cite web |url=https://www.satellitetoday.com/technology/2016/07/20/sstl-creating-new-leo-platform-honeywell-uk-space-agency/ |title= SSTL Creating New LEO platform for Honeywell and UK Space Agency |publisher = Satellite Today |last= Henry |first= Henry |date= 20 July 2016}}</ref>
* NovaSAR-1:- Part funded by UK Government, S-Band SAR Payload supplied by Airbus Defence &Space. Incorporates an S-Band Synthetic Aperture Radar to help monitor suspicious shipping activity.<ref>[https://www.bbc.com/news/science-environment-45523677 NovaSAR: UK radar satellite to track illegal marine shipping activity]. Jonathan Amos, ''BBC News''. 16 September 2018.</ref> Launched on 16 September 2018, by [[ISRO]].<ref>{{cite news |title=ISRO Launches 2 UK Earth Observation Satellites Successfully |url=https://headlinestoday.org/science/2874/isro-launches-2-uk-earth-observation-satellites-successfully/ |access-date=16 September 2018 |agency=Headlines Today}}</ref> 
* [[RemoveDEBRIS]]: Active Debris Removal (ADR) technology demonstration in 2018 (e.g. capture, deorbiting) representative of an operational scenario during a low-cost mission using novel key technologies.<ref>{{cite web |url = https://www.bbc.com/news/science-environment-41973646 |title = RemoveDebris: Space junk mission prepares for launch |first = Rebecca |last = Morelle |author-link = Rebecca Morelle |publisher = BBC News |date = 28 November 2017}}</ref> RemoveDebris will deploy a representative small satellite and then will recapture and de-orbit it. Launched on 2 April 2018 to the International Space Station, deployed from the KIBO airlock on the ISS in June 2018.<ref>{{cite web |url =https://www.bbc.com/news/science-environment-43584070 |title = Space junk demo mission launches |first = Jonathan |last = Amos |publisher = BBC News |date = 2 April 2018}}</ref><ref>{{cite web |url = https://www.bbc.co.uk/news/science-environment-44603780 |title = RemoveDebris: Mission to clear a huge mess above Earth |first = Jonathan |last = Amos |publisher = BBC News |date = 25 June 2018}}</ref>
* Telesat LEO prototype satellite for [[Telesat]] as part of a test and validation phase for an advanced, global LEO satellite constellation. Launched January 2018.<ref>{{cite web |url=https://www.telesat.com/news-events/telesat-procures-two-prototype-satellites-global-ka-band-low-earth-orbit-constellation |title= Telesat Procures Two Prototype Satellites for Global Ka-band Low Earth Orbit Constellation |publisher= Telesat |date= 27 April 2016}}</ref><ref>{{cite web |url = https://www.sstl.co.uk/media-hub/latest-news/2018/sstl-confirms-launch-of-carbonite-2-and-telesat-le |title = SSTL confirms launch of CARBONITE-2 and Telesat LEO satellite |publisher = Surrey Satellite Technology |date = 12 January 2018}}</ref>
* [[Carbonite-2|CARBONITE-2]], an Earth Observation technology demonstration mission owned and operated by SSTL and launched January 2018 which successfully demonstrated video-from-orbit capability.<ref name=ukdefencejournal-20180301>{{cite news |url=https://ukdefencejournal.org.uk/royal-air-force-satellite-launched-space/ |title=Royal Air Force surveillance satellite launched into space |last=Allison |first=George |newspaper=UK Defence Journal |date=1 March 2018 |access-date=2 March 2018}}</ref><ref>{{cite web |url = https://www.sstl.co.uk/media-hub/latest-news/2018/sstl-releases-first-full-colour-videos-from-carbon |title = SSTL releases first full colour videos from CARBONITE-2 |publisher = Surrey Satellite Technology |date = 16 April 2018}}</ref>  
* TripleSat: A Constellation of 3 Earth observation satellites imaging at 1m resolution.  Image data leased to Chinese company 21AT.<ref>{{cite web |url = https://www.sstl.co.uk/media-hub/latest-news/2015/sstl-announces-the-successful-launch-of-the-dmc3-t |title = SSTL announces the successful launch of the DMC3/TripleSat Constellation |publisher = Surrey Satellite Technology |date = 10 July 2015}}</ref>
* Five [[RapidEye]] satellite platforms delivered to MDA [[MacDonald Dettwiler & Associates]] for the RapidEye Constellation and successfully launched from [[Baikonur Cosmodrome|Baikonur]] on 29 August 2008.<ref>{{cite news|title=RapidEye constellation launched successfully|url=https://spaceref.com/press-release/rapideye-constellation-launched-successfully/|date=August 29, 2008|website=spaceref.com|access-date=January 27, 2023}}</ref>
* [[UK-DMC 2]] and [[Deimos-1]] were launched on a [[Dnepr (rocket)|Dnepr]] rocket from the Baikonur Cosmodrome on 29 July 2009.
* NigeriaSat-2 and NX satellites, successfully launched on 17 August 2011.<ref>{{cite web |url = https://www.sstl.co.uk/media-hub/latest-news/2011/sstl-successfully-launches-2-satellites-for-nigeri |title = SSTL successfully launches 2 satellites for Nigeria |publisher = Surrey Satellite Technology |date = 17 August 2011}}</ref>
* exactView-1, successfully launched on 22 July 2012 on a Soyuz rocket from the Baikonur Cosmodrome.<ref>{{cite web |url = https://www.sstl.co.uk/media-hub/latest-news/2012/sstl-announces-the-successful-launch-of-exactview- |title = SSTL announces the successful launch of exactView-1 |publisher = Surrey Satellite Technology |date = 22 July 2012}}</ref>
* SAPPHIRE: Providing a satellite-based Resident Space Object (RSO) observing service that will provide accurate tracking data on deep space orbiting objects. Sapphire is the [[Canada|Canadian]] [[Department of National Defence (Canada)|Department of National Defence]]'s first dedicated operational [[military satellite]]. Its space-based [[electro-optical sensor]] will track man-made space objects in Earth orbits between 6000 and 40,000&nbsp;km as part of Canada's continued support of [[Air Force Space Command#Space Situational Awareness|Space Situational Awareness]] and the [[U.S. Space Surveillance Network]] by updating the U.S. Satellite Catalogue that is used by both NORAD and Canada.<ref>[http://www.spacedaily.com/reports/SSTLs_40th_satellite_platform_launch_Sapphire_reaches_orbit_999.html "SSTL's 40th satellite platform launch: Sapphire reaches orbit."] ''SpaceDaily.com'', 26 February 2013.</ref>
* [[STRaND-1]]: Surrey Training, Research and Nanosatellite Development 1, launched in 2013, flies several new technologies for space applications and demonstration including the use of [[Android (operating system)]] open source operating system on a [[Smartphone]].<ref>{{cite web |title=World's first "phonesat", STRaND-1, successfully launched into orbit |url=http://www.sstl.co.uk/Missions/STRaND-1--Launched-2013 |publisher = Surrey Satellite Technology |date=25 February 2013 |archive-url=https://web.archive.org/web/20130506125554/http://www.sstl.co.uk/News-and-Events?story=2123 |archive-date=6 May 2013 |url-status=dead }}</ref>

==See also==
* [[Aerospace industry in the United Kingdom]]
* [[Comparison of satellite buses]]
* [[UoSAT-1]]
* [[UoSAT-2]]
* [[UoSAT-3]]
* [[UoSAT-4]]
* [[UoSAT-5]]
* [[UoSAT-12]]
* [[Cerise (satellite)|Cerise]]
* [[AlSAT-1]]
* [[UK-DMC]]
* [[UK-DMC 2]]
* [[UK-DMC 3]]
* [[BILSAT-1]]
* [[Deimos-1]]
* [[Snap-1 nanosatellite]]
* [[FASat-Alfa|FASat-Alfa and Bravo]]
* [[RemoveDEBRIS]]
* [[KazEOSat 2]]

==Navigation Payloads for Europe's Galileo Constellation==
Between 2010 and 2020 SSTL manufactured and delivered 34 navigation payloads for the deployment phase of Galileo, Europe's satellite navigation system. OHB System AG was the prime contractor and builder of the spacecraft platform and SSTL had full responsibility for the navigation payloads, the brains of Galileo's navigation system.<ref>{{Cite web|url=https://www.sstl.co.uk/media-hub/latest-news/2010/british-company-sstl-wins-key-role-in-europe%E2%80%99s-gal|title=Press Release: SSTL wins key role in Galileo Programme &#124; SSTL}}</ref><ref>{{Cite web|url=https://www.sstl.co.uk/media-hub/latest-news/2012/sstl-signs-%E2%82%AC80m-contract-with-ohb-for-second-batch|title=SSTL Signs €80, Contract With OHB For Second Batch &#124; SSTL}}</ref><ref>{{Cite web|url=https://www.sstl.co.uk/media-hub/latest-news/2017/sstl-celebrates-galileo-navigation-payload-order|title=Lift off for 4 Galileo satellites as SSTL celebrates navigation payload order &#124; SSTL}}</ref>

==References==
{{Reflist}}

==External links==
* [http://www.sstl.co.uk/ Surrey Satellite Technology Ltd]

{{Aerospace industry in the United Kingdom}}

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[[Category:Aerospace companies of the United Kingdom]]
[[Category:Aerospace engineering organizations]]
[[Category:Airbus Defence and Space]]
[[Category:Spacecraft manufacturers]]
[[Category:Space programme of the United Kingdom]]
[[Category:University of Surrey]]
[[Category:Companies based in Guildford]]
[[Category:Technology companies established in 1985]]
[[Category:1985 establishments in England]]
[[Category:Amateur radio companies]]