In order to reduce the interference of space environment in space microgravity experiments, one drag-free and attitude control system could be used in space science experiments to compensate non-conservative forces and to minimize residual disturbances of the satellite. As the main parts of the drag-free control system, noises of thrusters and GPS receivers have significant impacts on the performance of the control system. To accurately analyze these effects, a cusped field thruster is used in this paper and its noise characteristics are measured first. Second, a drag-free and attitude control system with both thrust noise and measurement noise considered is designed. Then, the effects of these noises on the whole control system are analyzed thoroughly. Finally, two noise reduction methods for those two noises are used in this study and the effectiveness of noise suppression methods is verified.

中文翻译：

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推力噪声和测量噪声对无阻力姿态控制系统的影响

为了减少空间微重力实验对空间环境的干扰，可以在空间科学实验中使用一种无​​阻力和姿态控制系统来补偿非保守力并使卫星的残余干扰最小化。作为无阻力控制系统的主要组成部分，推进器和GPS接收器的噪声对控制系统的性能有重大影响。为了准确地分析这些影响，本文使用了尖头磁场推进器，并首先测量了其噪声特性。其次，设计了同时考虑推力噪声和测量噪声的无阻力姿态控制系统。然后，全面分析这些噪声对整个控制系统的影响。最后，