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Quelque contribution à l'optimisation de constellations de satellites

Abstract : Half-way between optimization and astronautic, this research study deals with satellites constel- lations design problems. In order to find the required number of satellites and to correctly set their position, such are the technical challenges of this thesis. To minimise the cost and reduce the time such are the economical challenges the space industries are confronted in a daily manner. The major difficulties of these problems are the size and the characteristics of the search space The irregularity of the criterions The mathematical and physical heterogeneity of parameters forbids the use of classical algorithms The evaluation of a solution, which uses a time consuming evalua- tion without returning pertinent information about the good or bad properties of the constellations, forbid a massive exploration of the search space. From this constatation and several preliminary studies a new approach is born. Based on a better use of the simulation and on a simplification of the criterions, the algorithm is composed of several levels and uses different optimization techniques it integrates a knowledge database on the orbits and a numerical optimization process both orchestrated by a metaheuristic algorithm. This new approach tries to bypass the main drawbacks of the field with a decomposition of the problem.
keyword : Optimisation
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https://tel.archives-ouvertes.fr/tel-00634769
Contributor : Enguerran Grandchamp <>
Submitted on : Sunday, October 23, 2011 - 3:04:32 AM
Last modification on : Wednesday, July 18, 2018 - 8:11:27 PM
Document(s) archivé(s) le : Tuesday, January 24, 2012 - 2:20:25 AM

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  • HAL Id : tel-00634769, version 1

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Grandchamp Enguerran. Quelque contribution à l'optimisation de constellations de satellites. Informatique [cs]. Institut National Polytechnique de Toulouse - INPT, 2001. Français. ⟨tel-00634769⟩

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