Optimal Interferometric Maneuvers for Distributed Telescopes
Document typeConference report
Rights accessRestricted access - publisher's policy
The scientfic community has proposed several missions to expand our knowledge about the universe, its formation and search for distant Earth-like planets. Most of the present space-based observation missions have reached angular resolution limits, therefore the potential benefits concerning angular resolution and intensity that can be reaped from the realization of interferometry within a distributed satellite telescope have led to the proposal of several multi-spacecraft systems. Among these missions synthetic imaging space based interferometers, consisting of multiple telescope apertures flying in controlled formation in order to combine received information from each of the flotilla members are nowadays the subject of interesting research. The objective of synthesizing images with high angular resolution, low ambiguity and high intensity is always a tradeoff with the whole fuel consumption of the mission. As a consequence, this research focuses on the design of interferometric maneuvers and optimal interferometric controllers balancing image performance and energy consumption. The first part of the work presents the optimization and design process of coordinated spiral maneuvers due to their interferometric interest when filling the frequency plane of the observed image. On the other hand, the second part focuses in the resolution of an optimal control problem within the LQ framework, to determine the optimal imaging reconfigurations of a formation flying system. Its objective is to balance the quality of the celestial observation and the fuel usage, which are the key aspects of any spacebased observation mission. This study concerning implementability and performance of interferometric maneuvers will lead towards the enlargement of mission lifetime and flexibility of the system while conserving acceptable quality observations.
CitationDiaz-Aguilo, M. [et al.]. Optimal Interferometric Maneuvers for Distributed Telescopes. A: International Astronautical Congress. "60th International Astronautical Congress". 2009.
|manuscriptIAC.pdf||Article de Proceedings||4,626Mb||Restricted access|