Impact of Micro-vibration Disturbances from Satellite Platforms with Rotating mechanism on Space Laser Communication

Space laser communication is being widely applied in inter-satellite networking of large constellations and high-speed satellite-ground data transmission. Restricted by the laser divergence angle at the level of tens of microradians, it imposes extremely high requirements on the micro-vibration of satellite platforms. For a satellite platform with a high-speed rotating cabin of large inertia, which faces difficulties in platform stability control under multiple rotating mechanisms and laser link breakage caused by micro-vibration, this paper proposes satellite-level micro-vibration control and verification measures, designs working conditions for satellite-level ground micro-vibration tests, and obtains the micro-vibration spectra at the installation position of the laser terminal on the large-inertia rotating satellite platform.