{"id":644957,"date":"2024-11-22T16:27:02","date_gmt":"2024-11-22T13:27:02","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/proba-3-will-use-laser-for-millimeter-precision-in-space\/"},"modified":"2024-11-22T16:27:02","modified_gmt":"2024-11-22T13:27:02","slug":"proba-3-will-use-laser-for-millimeter-precision-in-space","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/proba-3-will-use-laser-for-millimeter-precision-in-space\/","title":{"rendered":"#Proba-3 will use laser for millimeter precision in space"},"content":{"rendered":"
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\n \"Proba-3:
\n Credit: ESA – M. P\u00e9doussaut \/ J. Versluys
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ESA’s double-spacecraft precision formation flying mission, Proba-3<\/a>, is due to be launched from India on 4 December. The spacecraft pair will employ a set of positioning technologies to keep formation in space and this image shows the most precise: a laser shone from one platform to a retroreflector on the other. The reflected laser beam will provide positioning precision down to a single millimeter.<\/p>\n

This infrared view of the reflected laser beam was acquired during on-ground calibration testing performed by ESA, MDA and Center Spatial de Li\u00e8ge personnel which took place at Redwire Space in Kruibeke, Belgium, back in February.<\/p>\n

The goal of the mission is to achieve artificial solar eclipses on demand, as Proba-3’s Occulter spacecraft casting a precisely-controlled shadow onto its Coronagraph spacecraft for six hours at time.<\/p>\n

To maintain the position of a shadow just 8 cm across on the Coronagraph satellite from the Occulter satellite around 150 m away, the two satellites rely on multiple sensors, including inter-satellite radio links, Global Navigation Satellite System receivers, visual imaging of LEDs and\u2014for the most precise positioning at closest range\u2014a laser metrology (or “measurement of measurement”) system.<\/p>\n

The laser is seen being fired from the Occulter spacecraft towards the Coronagraph’s retroreflector, designed to reflect it back in precisely the same direction it originated from. In addition, a set of Shadow Position Sensors located around the coronagraph aperture will ensure the shadow remains in the correct position.<\/p>\n

This mission is being put together for ESA by a consortium led by Spain’s SENER, with participation by more than 29 companies from 14 countries. The Proba-3 platforms have been designed by Airbus Defense and Space in Spain and satellite integration by Redwire in Belgium. GMV in Spain is responsible for Proba-3’s formation flying subsystem, while its main coronagraph instrument comes from Belgium’s Center Spatial de Li\u00e8ge, CSL.<\/p>\n

Proba-3 is due to be launched via PSLV-XL launcher by the Indian Space Research Organization, ISRO.<\/p>\n

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\n\t\t\t\t\t\t\t\t\t\t\t\t\tProvided by
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tEuropean Space Agency
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<\/p><\/div>\n

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\n\t\t\t\t\t\t\t\t\t\t\t\tCitation<\/strong>:
\n\t\t\t\t\t\t\t\t\t\t\t\tProba-3 will use laser for millimeter precision in space (2024, November 22)
\n\t\t\t\t\t\t\t\t\t\t\t\tretrieved 22 November 2024
\n\t\t\t\t\t\t\t\t\t\t\t\tfrom https:\/\/phys.org\/news<\/a>\/2024-11-proba-laser-millimeter-precision-space.html\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n

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