Research on Semi-active Control of Low Frequency Vibration of SAR Satellite under Fast Maneuvering Conditions

• DOI: 10.23919/ciss51089.2021.9652312
• Publication Date: 2021-12-28T16:31:27Z
• Authors: Chen Zhu; Xingtian Liu; Fagang Zhao
• Keywords: 0103 physical sciences; 01 natural sciences

Synthetic Aperture Radar (SAR) satellite is a kind of high-resolution earth observation system. Due to the vibration sensitivity SAR antenna, maintaining stability structure fundamental ensure imaging accuracy , so it particularly important suppress satellite. In this paper, finite element model antenna with integrated relaxation dampers established, maneuvering conditions are simulated and analyzed, influence semi-active control on suppression effect studied. The results show that based damper has good antenna. displacement amplitude attenuated by more than 80% within 10s, time complete attenuation shortened 50%. Provides new idea for large-scale antennas, which guiding significance actual engineering.