Coronagraph; Formation flying; High accuracy metrology; Satellite constellation; Solar physics; Space mission; Alignment measurement; Autonomous formation flyings; European Space Agency; Inter satellite distances; Longitudinal movements; Measurement concepts; Metrological system; Aerospace Engineering; Astronomy and Astrophysics; Geophysics; Atmospheric Science; Space and Planetary Science; Earth and Planetary Sciences (all); General Earth and Planetary Sciences
Abstract :
[en] PROBA-3 is a space mission of the European Space Agency that will test, and validate metrology and control systems for autonomous formation flying of two independent satellites. PROBA-3 will operate in a High Elliptic Orbit and when approaching the apogee at 6·104 Km, the two spacecraft will align to realize a giant externally occulted coronagraph named ASPIICS, with the telescope on one satellite and the external occulter on the other one, at inter-satellite distance of 144.3 m. The formation will be maintained over 6 hrs across the apogee transit and during this time different validation operations will be performed to confirm the effectiveness of the formation flying metrology concept, the metrology control systems and algorithms, and the spacecraft manoeuvring. The observation of the Sun's Corona in the field of view [1.08;3.0]RSun will represent the scientific tool to confirm the formation flying alignment. In this paper, we review the mission concept and we describe the Shadow Position Sensors (SPS), one of the metrological systems designed to provide high accuracy (sub-millimetre level) absolute and relative alignment measurement of the formation flying. The metrology algorithm developed to convert the SPS measurements in lateral and longitudinal movement estimation is also described and the measurement budget summarized.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Loreggia, Davide; INAF-Astrophysical Observatory of Turin, Turin, Italy
Fineschi, Silvano; INAF-Astrophysical Observatory of Turin, Turin, Italy
Capobianco, Gerardo; INAF-Astrophysical Observatory of Turin, Turin, Italy
Bemporad, Alessandro; INAF-Astrophysical Observatory of Turin, Turin, Italy
Casti, Marta; INAF-Astrophysical Observatory of Turin, Turin, Italy ; ALTEC S.p.A., Corso Marche, TO, Italy
Landini, Federico; INAF-Astrophysical Observatory of Turin, Turin, Italy
Nicolini, Gianalfredo; INAF-Astrophysical Observatory of Turin, Turin, Italy
Zangrilli, Luca; INAF-Astrophysical Observatory of Turin, Turin, Italy
Massone, Giuseppe; INAF-Astrophysical Observatory of Turin, Turin, Italy
Noce, Vladimiro; INAF-Astrophysical Observatory of Arcetri, Florence, Italy
Romoli, Marco; University of Florence, Department of Astronomy, Florence, Italy
Terenzi, Luca; INAF-Astrophysical Observatory of Bologna, Bologna, Italy
Morgante, Gianluca; INAF-Astrophysical Observatory of Bologna, Bologna, Italy
Belluso, Massimiliano; INAF-Astrophysical Observatory of Catania, Catania, Italy
Thizy, Cédric ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; Centre Spatial de Liege, Liege, Belgium
Galy, Camille ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; Centre Spatial de Liege, Liege, Belgium
Hermans, Aline ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; Centre Spatial de Liege, Liege, Belgium
Franco, Pierre ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; Centre Spatial de Liege, Liege, Belgium
Pirard, Ariane; Centre Spatial de Liege, Liege, Belgium
Rossi, Laurence ; Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; Centre Spatial de Liege, Liege, Belgium
Buckley, Steve; ON Semiconductor Building, Cork, Ireland
Spillane, Raymond; ON Semiconductor Building, Cork, Ireland
O'Shea, Martin; ON Semiconductor Building, Cork, Ireland
Galano, Damien; European Space Agency, AZ Noordwijk, Netherlands
Versluys, Jorg; European Space Agency, AZ Noordwijk, Netherlands
Hernan, Ken; European Space Agency, AZ Noordwijk, Netherlands
The authors acknowledge the support provided by the PROBA-3 Managerial and Technical Staff of the European Space Agency (ESA) within the contract with the Centre Spatial de Liège (CSL) and subcontractors, subscribed for the Payload Instrument design and development (C/D Phases).
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