星地链路激光通信载荷粗跟踪回路设计与验证
发布时间：2019-07-16 19:30
【摘要】：针对地球同步中继卫星对地激光通信,设计了一种包含多重闭合回路的伺服跟踪系统,分析了跟踪算法的数学模型以及用于光斑脱靶量补偿的带执行器限位比例积分微分控制算法,介绍了星地链路激光通信跟踪系统中伺服闭环控制系统的组成、各执行模块的性能指标和工作模式,给出了伺服闭环系统和光闭环系统的工作原理。根据所设计的脱靶量提取算法和误差补偿算法,分别在图像处理模块和下位机执行模块中编写了光闭环跟踪程序。对整个系统进行静、动态环境下微弱信标光的跟踪实验测试,最终获得动态环境下±20μrad(3σ,σ为标准差)、静态环境下±7.5μrad(3σ)的跟踪精度,实验结果验证了所设计跟踪回路的可行性及良好的操作性,结果表明该跟踪系统具有较高的跟踪精度。
[Abstract]:A servo tracking system with multiple closed circuits is designed for geosynchronous relay satellite to ground laser communication. The mathematical model of tracking algorithm and the proportional integral differential control algorithm with actuator limit for spot miss distance compensation are analyzed. The composition of servo closed loop control system, the performance index and working mode of each execution module in satellite-ground link laser communication tracking system are introduced. The working principle of servo closed loop system and optical closed loop system is given. According to the designed miss distance extraction algorithm and error compensation algorithm, the optical closed-loop tracking program is written in the image processing module and the lower computer execution module, respectively. The tracking accuracy of 卤20 渭 rad in dynamic environment and 卤7.5 渭 rad in static environment is obtained by tracking the weak beacon light in static and dynamic environment. The experimental results verify the feasibility and good operation of the designed tracking loop, and the results show that the tracking system has high tracking accuracy.
【作者单位】： 长春理工大学空间光电技术研究所;
【基金】：国家863计划(2012AA0017)
【分类号】：TN929.1
，
本文编号：2515222
[Abstract]:A servo tracking system with multiple closed circuits is designed for geosynchronous relay satellite to ground laser communication. The mathematical model of tracking algorithm and the proportional integral differential control algorithm with actuator limit for spot miss distance compensation are analyzed. The composition of servo closed loop control system, the performance index and working mode of each execution module in satellite-ground link laser communication tracking system are introduced. The working principle of servo closed loop system and optical closed loop system is given. According to the designed miss distance extraction algorithm and error compensation algorithm, the optical closed-loop tracking program is written in the image processing module and the lower computer execution module, respectively. The tracking accuracy of 卤20 渭 rad in dynamic environment and 卤7.5 渭 rad in static environment is obtained by tracking the weak beacon light in static and dynamic environment. The experimental results verify the feasibility and good operation of the designed tracking loop, and the results show that the tracking system has high tracking accuracy.
【作者单位】： 长春理工大学空间光电技术研究所;
【基金】：国家863计划(2012AA0017)
【分类号】：TN929.1
，
本文编号：2515222
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