MG14 - Talk detail

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Abstract

During its lifetime in space the attitude and the orbit of a satellite are influenced by different perturbations resulting from the space environment. On the one hand, these natural boundary conditions have an impact on the design of the satellite, for instance thermal shielding or the design of the propulsion system. On the other hand, these disturbances may affect any data which is exchanged between a satellite and its ground station. Thus, the modeling and propagation of satellite motion is one of the central tasks in mission analysis. For this purpose, the High Performance satellite dynamics Simulator (HPS) is utilized (ZARM, DLR Institute of Space Systems). It has been argued for quite some time that commonly used solar radiation pressure (SRP) models like the Cannonball and the Box-and-Wing model are not sufficient enough for an accurate SRP analysis if the involved geometries differ from a spherical shape or a standard bus and solar panel assembly. I will give an overview on the implications of accurate SRP modeling and the expected improvement of the implementation of non-gravitational disturbances modeling.

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