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分析了不在同一轨道平面的光通信终端搭载卫星的相对运动模型,通过对终端万向节指向的补偿校正来提高扫瞄捕获概率,缩短激光链路的建立时间,并对通信过程中的接收光束在电荷藕合器件靶面坐标系中的坐标值进行修正,减弱对快速倾斜镜的高带宽限制.最后对相对运动模型进行解算,依据方案对捕获和跟踪过程的补偿设计进行数值仿真,结果表明本设计方案可以消除由于卫星相对运动引起的光束指向偏差.该方案简化了系统结构,降低了系统复杂性,减少了能量消耗,同时易于星载计算机程序实现.
The relative motion model of satellites equipped with optical communication terminals that are not in the same orbital plane is analyzed. By compensating and correcting the pointing of the terminal universal joints, the scanning capture probability is improved, the setup time of the laser link is shortened, and the receive beam The coordinate value of the target surface of the charge-coupled device is corrected to reduce the high bandwidth limit of the fast tilt mirror.Finally, the relative motion model is solved and the compensation design of the capture and tracking process is numerically simulated according to the scheme. The results It shows that this design scheme can eliminate the deviation of beam pointing caused by the relative movement of satellites.The scheme simplifies the system structure, reduces the system complexity, reduces the energy consumption and is easy to realize the onboard computer program.