Coronagraph; Formation flying; Metrology; Position sensor; Space mission; Astronomical application; Inter satellite distances; Metrological system; Position sensors; Space missions; Spatial and temporal resolutions; Aerospace Engineering; Control and Optimization; Instrumentation
Abstract :
[en] The development and employment of metrology controlled diluted systems for astronomical applications in space represents a cornerstone to dramatically improve the observation limits. In this scenario, the ESA mission PROBA-3 is the first technology demonstration mission aimed at verifying and validating several metrological systems to obtain high accuracy formation flying (FF) of two satellites. The two spacecraft will be aligned and maintained in a FF, around the apogee of their geocentric orbit, at an average inter-satellite distance of 144m, with an accuracy down to sub-millimetre level. The scientific task of the mission, that is the FF validation tool, is the observation of the Sun's Corona at high spatial and temporal resolution within the field of view [1.08; 3.0]Ro. To this end, one satellite will house a coronagraph telescope, named ASPIICS, and the other one, the external occulter. In this paper, we review the metrology concept applied to the mission with a special focus on the Occulter Position Sensor Emitters (OPSE) metrology sub-system, a set of 3 monochromatic Led emitters positioned on opposite-Sun surface of the occulter and imaged at the ASPIICS's focal plane.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Loreggia, Davide; INAF-Astrophysical Observatory of Turin, Pino Torinese, Italy
Capobianco, Gerardo; INAF-Astrophysical Observatory of Turin, Pino Torinese, Italy
Fineschi, Silvano; INAF-Astrophysical Observatory of Turin, Pino Torinese, Italy
Massone, Giuseppe; INAF-Astrophysical Observatory of Turin, Pino Torinese, Italy
Thizy, Cédric ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; CSL-Centre Spatiel de Liege, Liege, Belgium
Galy, Camille ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; CSL-Centre Spatiel de Liege, Liege, Belgium
Hermans, Aline ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; CSL-Centre Spatiel de Liege, Liege, Belgium
Pirard, Ariane; CSL-Centre Spatiel de Liege, Liege, Belgium
Cernica, Ileana; IMT-National RD Institute for Microtechnologies, Bucharest, Romania
Ionescu, Octavian; IMT-National RD Institute for Microtechnologies, Bucharest, Romania
Purica, Munizer; IMT-National RD Institute for Microtechnologies, Bucharest, Romania
Galano, Damien; ESA-European Space Agency, Noordwijk, Netherlands
Language :
English
Title :
The occulter position sensor emitters (OPSE) metrology sub-system for the PROBA-3 mission
Publication date :
June 2019
Event name :
2019 IEEE 5th International Workshop on Metrology for AeroSpace (MetroAeroSpace)
Event place :
Torino, Ita
Event date :
19-06-2019 => 21-06-2019
Main work title :
2019 IEEE International Workshop on Metrology for AeroSpace, MetroAeroSpace 2019 - Proceedings
Publisher :
Institute of Electrical and Electronics Engineers Inc.
AESS - Aerospace & Electronic Systems Society IEEE - Institute of Electrical and Electronics Engineers IEEE-IMS - IEEE Instrumentation and Measurement Society
Funding text :
VII. ACKNOWLEDGEMENTS This work has been done in the framework of the contract with the Centre Spatial de Liege and subcontractors, subscribed for the Payload Instrument design and development (C/D Phases). We acknowledge technical and management staff of CSL and ESA for the precious support provided. AES Chapter - IEEE Italy Section
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