Abstract
Recently two methods of measuring the gravitational constant G, possible equivalence principle violation (measured by the Eötvös parameter η) and the hypothetic 5th force parameters α and λ on board a drag-free Earth’s satellite were suggested: SEE (Satellite Energy Exchange) and LPH (Libration Point Hitting). These methods are developed and compared. Various particle trajectories near a heavy ball are studied numerically and analytically. Some basic sources of error are analysed. The G measurement procedure is modelled by noise insertion to a “true” trajectory. It is concluded that the presense knowledge of G, α (for λ≥1 m) and η can be improved by at least two orders of magnitude.
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