Abstract:
Laser communication offers high transmission rates and strong anti-interference performance, making it the development direction of future space communication. However, the narrow divergence angle of the laser beam places strict requirements for the micro-vibration environment of the satellite platform. The anti-microvibration design strategies of three representative foreign laser communication satellites, namely, Artemis, OICETS and EDRS-C, were systematically reviewed in this paper. Based on the analysis of vibration spectrum test data, four platform microvibration spectrum lines, including NASDA spectrum, ESA spectrum, JBM-EF ICD spectrum, and LCDE spectrum, were obtained. Considering the characteristics of laser communication satellites, the technical route of anti-microvibration design was summarized from aspects including component-level disturbance dynamic tests, finite element model correction, system-level microvibration tests, and integrated simulation of satellite attitude, vibration and laser terminal. Finally, suggestions for key work were put forward to enhance the adaptability of Chinese laser communication load to the satellites platform micro-vibration environment.