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Sodern
IndustrySpace instrumentation, optics and neutron
PredecessorAstrium (EADS Group)
Founded1962
Headquarters
Limeil-Brévannes
,
France
ProductsStars Trackers, C.N.A., strip filters
65 M€
Number of employees
350
ParentAIRBUS GROUP
Websitehttp://www.sodern.com

Sodern is a French company based in Limeil-Brévannes, near Paris in Ile-de-France, specialized in space instrumentation, optics and neutron analyzers.

History

IPS visible on the side of the ASTRO-1 observatory

Sodern was created in 1962 in the Philips' Laboratory of Electronics and Applied Physics (LEP) to launch a first generation of external neutron sources.[1]

In the late sixties, Sodern began to diversify its activities towards optical and high-tech space sensors, for which it is today the global leader.[2] In the early 70s, on CNES demand, Sodern realized the first European Earth sensors, sensors dedicated to the attitude control of the experimental telecommunication satellite Symphonie.[3]

In 1975, the European Space Agency (ESA) subcontracted the manufacturing of multiple instruments for the Spacelab. Sodern achieved a high-precision scoring system dedicated to readjust the inertial and to high-performance attitude measurement. Sodern also delivered SED04 stars trackers for the Instrument Pointing System (IPS) of the Spacelab observatory.[4] These sensors had a precision of 0.75 seconds of arc, thus the precision needed to see "a golf ball from a 10 km [6.2-mile] distance".[2]

Meanwhile, in the mid-1990s, Sodern enhanced its optical instrumentation activity dedicated to Space.

Activity

Although Sodern activity started in the neutron area, by designing neutron sources for the French deterrent force, it began to diversify into optical sensors and advanced spacecraft instrumentation in the late 1960s.

Spatial Instrumentation

Nowadays, its activities cover several ranges of space instruments.

- Instruments for satellite attitude control: Earth[5] and Solar sensors and stars trackers,[6] equipping among others Spot,[7] Helios,[8] Eurostar satellites[9] and M51 missile.[10] The first Earth sensor was created in 1977 and boarded on Meteosat I.

- Instruments for Earth observation (cameras, optical and optronic instruments for Spot satellites, Helios, Envisat, etc.).

- Advanced optical instruments for the nuclear industry, the French deterrence force and scientific research, for example Astrium ATV videometers,[11] that can guide its automatic docking[12] to the International Space Station (ISS), and the Infrared Atmospheric Sounding Interferometer (IASI) instrument for MetOp.[13]

- Unique scientific instruments created on demand and integrated aboard satellites, space stations and space vehicles, such as PHARAO atomic clock[14] (developed from the work of the Nobel Laureate Claude Cohen-Tannoudji), critical liquids on DECLIC orbit study instruments,[15] some of the main components of the camera seeking for exoplanets aboard COROT satellite,[16] etc.

Stars Trackers

As a Star trackers worldwide leader, Sodern takes in 75% of the global market with two other European leaders, Galileo (Italy) and Jena Optronik (Germany).[17]

SED16 sensor has been the first to be used to replace gyroscopes in satellites. It was launched for the first time in May 2002 aboard Spot 5.[18] It has since flown with numerous satellites, including the US communication satellite AMC 12 on February 2005.[19] SED26, his almost similar successor, was launched on April 2005 aboard the satellite Apstar VI. The U.S. probe Dawn, that was made to visit two asteroids Vesta and Ceres, locates itself thanks to SED16 sensors.[20] Those sensors are, within all Sodern's supplied equipment, those farthest from Earth in deep Space.

The SED26 sensor guides, among others, the European Automated Transfer Vehicle ATV,[21] the satellites Helios 2,[22] Orbview 3 and 4, Sorce (from the American manufacturer Orbital), and more than a dozen satellites of the Russian manufacturer ISS-Reshetnev.[23]

Hydra Star Tracker

June 15, 2005, Sodern announced the development and production of Hydra sensors,[24] more accurate, more compact and lighter than the SED. Development of the sensor was funded by the European Space Agency (ESA) and The French Space Agency (CNES), and resulted in a radiation-resistant sensor, about half as heavy as the SED (which were 3Kg weight), which consumes only one Watt while operating and which has a precision of one arc second on each of its three axes. Sodern has sold more than a hundred of Hydra sensors so far, first of which was launched on September 6, 2012 aboard the French satellite Spot 6.[25]

Optical Instrumentation

In the late 60s, several projects in optical instrumentation have been materialized, such as the strips,[26] bands incorporating all the data exchanged during the operations of air traffic control, as well as the prototype of a mini-camera for the French hospital Val-de-Grâce, detecting gamma and beta rays, to facilitate complete removal of cancerous tumours.

During the 1980s, Sodern designed the focal plans and the optics for the Meris[27] instrument of the European Space Agency satellite Envisat, provided the cameras for the programs Iasi[28] (CNES) and CALIPSO[29] (CNES/NASA), and the dioptric objective of the Corot[30] instrument, which doesn't observe the Earth but looks into Space searching for exoplanets or studying the seismic activity of the stars.

By producing Spot1's camera in 1986 (DTA01),[31] Sodern began a long participation in Earth observation programs, providing cameras as much as optical and optronic instruments for the satellites ranges Spot, Helios, Envisat, etc.

Strip Filters

Strip Filters

Optical instrumentation and space being often linked, Sodern has developed a new generation of multi-spectral filters, "strip filters".[32]

The acquisition on multiple spectral bands is enabled by the use of multiple elementary optical filters juxtaposed to each other. Regarding the technology developed by Sodern, this juxtaposition is obtained by assembly of strips, the strip being a sub-set containing all the functions of an elementary filter. The final component is called "assembled strip filter". The number of elementary filters and their characteristics (centring, width, rejection, sloping edges, etc.) depend on the type of the satellite (Earth observation in the visible, infrared, etc.).

Neutron

In the 1980s, Sodern has developed its civil neutron activity and designed neutron generators (TN26[33] then GENIE36[34]) used by radioactive waste reprocessing plants for the measurement of transuranic elements. It's also used for in situ measurements in mining and oil logging, for the control of raw materials in metallurgy, for the detection of explosives and in neutron radiography.[35]

In the early 1990s, a first neutron-flanged tube for the oil logging (electrical logging) was designed at the request of Schlumberger, first of an ongoing collaboration.

Cement CNA

In the late 1990s, a new project of neutron analyzer was launched, the Continuous Neutron Analyzer (CNA) for the analysis of cements.[36] The principle of material analysis by neutron interrogation was then extended for a vast range of applications: coal, ores (copper, nickel, bauxite, iron), scrap and waste. In 2010, about 70 of those devices had been sold, mostly to cement makers.[37] These CNAs are marketed by another company, PANalytical.[38]

Based on the same principle of analysis, Sodern designed INES, a detector of explosives for luggage at airports. This detector was developed jointly with the French Commissariat à l'Energie Atomique (CEA). It has used a technology called FNA, for Fast Neutron Activation, different from its American competitor (Science Applications International Corp.) technology, which is called TNA, for Thermal Neutron Activation. Sodern FNA detector was based on the fact that explosives often contain a large amount of oxygen and nitrogen but little carbon. A pulsed generator of neutrons then enabled it to detect such elements. The detector was able to analyze 1200 bags per hour, for a detection rate of 99.8%.[39] It has not yet been commercialized.

THOR (military version) and ULIS (civilian version) emerged in the 1990s. They make the detection of explosive and hazardous materials (toxic chemicals products), as illegal ones, possible in abandoned luggage and parcels, from a distance.[40] Their small size allows them to be carried like a suitcase.

NIPPS (Neutron Induced Prompt Photometer System) allows the non-intrusive detection of illicit and dangerous substances.[41] It has been used by the Organisation for the Prohibition of Chemical Weapons(OPCW).[42]

Management

The main shareholder (90%) has been the European company (AIRBUS Group), the remaining 10% being held by the French Atomic Energy Agency CEA.

In 2016, the company employed about 350 people, including around 60% of engineers.

References

  1. ^ "Observatoire des armes nucléaires françaises (La recherche et la fabrication des armes nucléaires en France aujourd'hui-Cahier n°6/20)" (in French). May 2001. p. 22.
  2. ^ a b "New Scientist #1529". p. 49. Cite error: The named reference "New Scientist #1529" was defined multiple times with different content (see the help page).
  3. ^ Seetman, Bill (2007). "Jane's Space Systems and Industry (2007-2008)". p. 84.
  4. ^ Jean-Pierre Krebs. "Capteurs d'attitude et dispositifs d'imagerie pour satellites" (PDF). Techniques de l’Ingénieur, traité Électronique (in French). p. 6.
  5. ^ "Noise analysis of dry lubricated ball bearings for a scanning Earth sensor mechanism". 374. 1995: 185. Bibcode:1995ESASP.374..185N. {{cite journal}}: Cite journal requires |journal= (help)
  6. ^ "e2v and Sodern celebrate the sale of the 100th satellite attitude star tracker incorporating e2v image sensors". e2v. 25 October 2007.
  7. ^ "New Scientist #1584". p. 53.
  8. ^ Hugues Lanteri (15 May 2005). "Ariane 5 - Données relatives au Vol 193" (PDF). Astrium (in French). p. 16.
  9. ^ "EADS Space (Le Bourget 2005)". EADS (in French). 13 June 2005.
  10. ^ "Le missile M51". netmarine (in French). Archived from the original on July 26, 2013. {{cite news}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  11. ^ "ATV : des rendez-vous sous l'œil d'un laser". bulletin-electronique (in French). 9 September 2002.
  12. ^ "Docking video". Astrium Vidéothèque (in French). 24 February 2011.
  13. ^ "MetOp". eoPortalDirectory.
  14. ^ "Pharao Design Report" (Issue dedicated to the ACES mission SRR). cnes.fr. 15 May 2005.
  15. ^ "Séminaire de prospective scientifique spatiale du Cnes" (PDF). cnes.fr (in French). 6 July 2004. p. 146.
  16. ^ "COROTCAM, la caméra de COROT" (PDF). obspm.fr (in French).
  17. ^ "Europe Dominating Satellite Startracker Market". Spaceref. 16 November 2012.
  18. ^ Marc Pochard. "New In-flight Results of SED16 Autonomous Star Sensor" (54th International Astronautical Congress). ZARM - Centre of applied space technology and microgravity.
  19. ^ "e2v and Sodern celebrate the sale of the 100th Satellite Attitude Star Tracker incorporating e2v image sensors". e2v. 25 October 2007.
  20. ^ C. Anthony Vanelli; Brett Smith; Edward Swenka; Steve Collins (6 February 2010). "Straight on 'Til Morning: Guidance and Control Flight Experience from the Dawn Spacecraft". Univelt. p. 3.
  21. ^ Daniel Deak (8 March 2008). "ATV Le nouveau ravitailleur de l'ISS". Obsat (in French).
  22. ^ Jacques van Oene (December 13, 2004). "EADS SPACE, with its subsidiaries, is strongly involved in flight 165". spacebanter.
  23. ^ "Sodern star trackers for ISS-Reshetnev's spacecraft". ISS-Reshetnev. 28 June 2011.
  24. ^ D.Danesy. "6th International ESA Conference on Guidance, Navigation and Control Systems, held 17-20 October 2005 in Loutraki, Greece" (New Sodern's APS Based Autonomous Multiple Heads Star Sensor (hydra): Three Heads are Better than One). The SAO/NASA Astrophysics Data System.
  25. ^ Piot, Damien; Oddos-Marcel, Lionel; Gelin, Benoit; Thieuw, Alain; Genty, Patrick; Martinez, Pierre-Emmanuel; Airey, Stephen (February 13, 2013). HYDRA Star Tracker On-Board SPOT-6. 36th Annual American Astronautical Society Guidance & Control Conference. American Astronautical Society.
  26. ^ "Vintage poster".
  27. ^ esa. "Envisat-1 Mission & System Summary" (PDF). p. 81.
  28. ^ G. Corlay, M-C. Arnolfo (March–June 2001). "Microbolometer in space: IASI and PICASSO-CENA" (Acta Astronautica Volume 48, Issues 5–12). sciencedirect. pp. 299–309.
  29. ^ "Radiométre Imageur Infra-Rouge Calipso". cnes (in French). 27 March 2007.
  30. ^ "Du cœur des étoiles aux planètes habitables" (PDF). cnes (in French).
  31. ^ Torbjörn Westin. "Interior Orientation of Spot Imagery" (SSC Satellitbild Kiruna, Sweden - ISPRS Commission I). isprs. p. 193.
  32. ^ Roland Le Goff, François Tanguy, Philippe Fuss, Pierre Etcheto. "Technological development of multispectral filter assemblies for micro bolometer" (PDF). congrex.{{cite news}}: CS1 maint: multiple names: authors list (link)
  33. ^ International Atomic Energy Agency. "Manual for troubleshooting and upgrading of neutron generators" (PDF). IAEA. p. 35.
  34. ^ H. Toubon, G. Mehlman, T. Gain, A. Lyoussi, B. Perot, A.C. Raoul, M. Huver. "Innovative nuclear measurement techniques used to characterize waste produced by Cogema's new compaction facility" (PDF). wmsym. WM’01 Conference, February 25-March 1, 2001, Tucson, AZ. p. 4.{{cite news}}: CS1 maint: location (link) CS1 maint: multiple names: authors list (link)
  35. ^ [1]
  36. ^ "Sodern CNA-Cement". Panalytical.
  37. ^ "Analyse en ligne des matières premières : EADS Sodern scanne les matière premières au neutron". CAT INIST (in French).
  38. ^ "Sodern CNA cross-belt analyzers". Panalytical.
  39. ^ Bruno Desruelle (5 June 2009). "La photonique pour les applications de défense et de sécurité" (dga). Journées de l’Optique (in French). p. 20.
  40. ^ "Sodern: Non-invasive detection of illicit and dangerous substances". git-security.com. May 1, 2009.
  41. ^ Lech Starostin. "OPCW approved-Non Destructive Evaluation (NDE) techniques in verification activities". opcw. p. 20.
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