MICROSCOPE: systematic errors

Abstract The MICROSCOPE mission aims to test the weak equivalence principle (WEP) in orbit with an unprecedented precision of 10 −15 on Eötvös parameter thanks electrostatic accelerometers board a drag-free micro-satellite. is determined by statistical errors, due environment and instrument noises, systematic errors which this paper devoted. Systematic error sources can be divided into three categories: external perturbations, such as residual atmospheric drag or gravity gradient at satellite altitude, perturbations linked design, thermal magnetic from internal sources. Each evaluated bounded order set reliable upper bound WEP estimation uncertainty.