Τίτλος:
Simulation of the metrology of the PROBA-3/ASPIICS formation flying
solar coronagrah
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Formation Flying is now considered to be the most promising and
effective approach to deploy the forthcoming generation of very large
instruments in space. PROBA-3 is a technology mission devoted to the
in-orbit demonstration of formation flying techniques and technologies.
PROBA-3 will implement a giant coronagraph (called ASPIICS) that will
both demonstrate and exploit the capabilities and performances of
formation flying. ASPIICS is distributed on two spacecrafts separated by
150m, one hosting the external occulting disk and the other the optical
part of the coronagraph. ASPIICS will incorporate metrology units which
will allow determining both the absolute pointing and the relative
alignment of the formation. Photosensors located around the entrance
pupil of the coronagraph will determine the absolute positioning of the
instrument by sensing the penumbra behind the occulting disk. Light
sources located on the rear-side of the occulting disk will allow
verifying the alignment of the formation. We carried out a complete
numerical simulation of the metrology system and showed how corrections
are derived from the measurements to be applied to each spacecraft in
case of misalignments. This simulation was validated by a scaled model
of the coronagraph developed at Laboratoire d’Astrophysique de
Marseille. This study has been conducted in the framework of an ESA
“STARTIGER” Initiative, a novel approach aimed at demonstrating the
feasibility of a new and promising technology on a very short time scale
(six months).
Συγγραφείς:
Stathopoulos, F.
Antonopoulos, A.
Vives, S.
Dame, L.
Εκδότης:
SPIE - INT SOC OPTICAL ENGINEERING
Τίτλος συνεδρίου:
SPACE TELESCOPES AND INSTRUMENTATION 2010: OPTICAL, INFRARED, AND
MILLIMETER WAVE
Λέξεις-κλειδιά:
formation flying; shadow/occulter position sensor; 3D reconstruction;
spacecraft attitude; STARTIGER; ASPIICS; PROBA-3
