【作者】 章磊； 刘立人； 栾竹； 刘宏展； 徐荣伟；

【Author】 ZHANG Lei , LIU Liren , LUAN Zhu , LIU Hongzhan,XU Rongwei Laboratory of Information Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800

【机构】 中科院上海光学精密机械研究所信息光学实验室；

【摘要】 激光通信终端在发射之前必须在地面实验室内对其跟瞄参数和综合性能进行充分的验证与评估。本文介绍了一种新型大口径的精密测控光、机、电系统及其结构特点,它能在地面上模拟两颗不同轨道上卫星间激光通信的跟瞄过程。该装置通过将被测通信卫星间轨道运行数据经过计算机测控系统分析处理后,转换为驱动力矩电机转动的角位移量,直接带动二维万向转台高精度的转动来模拟通信卫星轨道间的等效相对俯仰角和方位角的变化,并由安装在万向转台上的被测激光通信终端进行跟瞄来实现此实验目的。本装置首次作到了在大范围、高精度的要求下等效模拟不同轨道高度间卫星之间的激光通信过程。更多还原

【Abstract】 The acquisition-pointing-tracking parameters and integrated technical specifications of laser communication terminals for inter-satellite link must be pre-verified and assessed thoroughly on a ground-based laboratory before launched. In this paper, an original high-precision optical satellite relative-trajectory simulating servosystem with a large optical aperture is introduced. The system is used to simulate the process of laser communications among satellites in different orbits. The data of orbits is inputted into a computer-based processing system and transformed into the angular displacement of the servomotor which drives the gimbal directly. The angular displacement of the two axes of the gimbal can simulate the elevation angle and azimuth of the two satellites in communication. A laser communication terminal fixed on the gimbal then performs the acquisition-pointing-tracking mechanisms to evaluate the system’s capacity. Moreover, the speciality of the system is presented through the comparison between the said system with other existing systems.更多还原