遥感卫星在轨微振动测量数据分析

介绍某遥感卫星的在轨微振动测量方案，并从背景噪声、扰动源特征、星体结构传递特征三个方面对测量数据进行分析。由测试数据发现，控制力矩陀螺（CMG）和动量轮引起的局部扰动较大，而传递至有效载荷处的扰动主要由CMG和双轴天线引起。星体结构对微振动有良好的衰减作用，有效载荷安装面的响应相对于振源得到了大幅衰减。

Data Analysis of Micro Vibration On Orbit Measurement for Remote Sensing Satellite

The on-orbit micro-vibration measurement system onboard a remote sensing satellite is introduced. The measured data is analyzed in three aspects of background noise level, disturbance source characteristics, and satellite structure transmission characteristics. From the measured data, it is found that local vibration caused by control moment gyro (CMG) and momentum wheels have the highest level, while the vibration transmitted to the payload is mainly caused by CMG and two axis antenna. The response at the payload interface is much lower than at the disturbance source interface, which means the vibration level is attenuated largely by the satellite structure.