In-orbit calibration of drag-free satellites

  • Theil S
  • Silas-Guilherme M
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In the near future a series of scientific satellite missions on fundamental physics as well as geodesy will be launched. A significant number of them will utilise a system for disturbance reduction, a so called Drag-Free Control (DFC) system. This new key technology allows to reduce the residual accelerations on experiments significantly. Its concept involves a free-flying proof mass inside the satellite which is shielded from non-conservative disturbances by the satellite. The Drag-Free Control system forces the satellite to follow the proof mass in order to generate a low disturbance free-fall environment. In order to provide a very low disturbance environment (for some missions

Author-supplied keywords

  • Drag-free control
  • Identification
  • Parameter estimation
  • Satellite dynamics
  • Test mass dynamics

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  • Stephan Theil

  • Michel Silas-Guilherme

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