Details

Autor(en) / Beteiligte

• Maute, P.
• Blancke, B.
• Jahier, J.Ph
• Alby, F.

Titel

Autonomous geostationary stationkeeping system optimization and validation

Ist Teil von

• Acta astronautica, 1989, Vol.20, p.93-101

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

1989

Link zum Volltext

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The increasing complexity of station keeping operations for recent geostationary satellites whose station keeping tolerances are getting closer and lifetime longer makes the concept of autonomous station keeping more and more attractive. The main challenge in designing such an autonomous system is, first, to minimize the changes induced in a classical spacecraft architecture as well as the corresponding complexity increase and then to validate this concept so that potential users can dispose on a ready-to-fly system. This paper presents the results of an going joint CNES-AEROSPATIALE study aiming at optimizing and qualifying a geostationary station keeping system using measurements of Earth, Sun and Polaris sensors. In the first part of the paper, the main system features and the optimization process are presented (- minimization of additional hardware - how to take advantage of this additional hardware in the system architecture? - what are the system performances?). In the second part, the validation method, based on implementation of the on board software on a microprocessor interfaced with a computer in charge of a system environment simulation, is described. Finally, results of system sensitivity analysis as well as possible inflight demonstration schemes, are presented.