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IMB-CNM talks: 4-Quadrant Si-Photodiodes for Attitude Control of OneWeb Satellites Constellation - J.M. Moreno and M.Rodríguez

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09 Apr 2019
11:30h
Sala de Actos Pepe Millán, IMB-CNM, Campus UAB.

OneWeb Satellites consists of the design, development, construction and launch of a megaconstellation of 900 satellites, with the aim of providing global high-speed Internet connection. OneWeb Satellites is a company founded by Airbus and OneWeb, for the design and production of this constellation. The first six satellites of the OneWeb megaconstellation flew successfully from the Guiana Space Center on February 27th and are now orbiting around Earth at 1,000 km.
Solar MEMS Technologies participates in this Project as official supplier of the sun sensors for the satellites of the constellation. These miniaturized units are mentioned to detect the Sun position while in orbit to let the satellite gets correctly oriented during different scenarios. Solar MEMS has designed and developed a customized sun sensor fulfilling OneWeb Satellites requirements, with an initial order of more than 1800 units to be integrated in the satellites of the constellation.
For this purpose, the sun sensors supplied by SolarMEMS to OneWeb Satellites are equipped with silicon photodiodes designed and fabricated by D+T Microelectrónica A.I.E. at IMB-CNM (CSIC). Today more than 4000 Si-photodiodes have been manufactured by D+T, covering more than 36 wafers, and has completed a test campaign including radiation tests per wafer, thermal tests, life tests and mechanical vibrations. Additionally, lot of data has been collected by Solar MEMS to do a deep data analysis and scientific comparison, allowing a new way for industrial and technical analysis never done before in Space Industry.