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针对目前星间光通信链路信号传输有效时间较短的问题,提出了双向激光链路跟踪稳定性的概念,分析了多种因素对跟踪稳定性的影响。综合接收信噪比、相对运动角速度和链路性能要求等因素,建立了链路稳定时间的期望公式。利用Simulink建立了双向激光通信链路跟踪仿真模型,通过仿真验证了理论公式的正确性。为实现星间光通信链路保持长时间稳定,提出在不同星间相对运动速度下采用不同控制参数的方法,实现了星间光通信终端控制策略优化,对今后卫星光通信航天工程化应用具有一定的意义。
Aiming at the problem of short effective signal transmission time of the inter-satellite optical communication link, the concept of bi-directional laser link tracking stability is proposed and the influence of many factors on the tracking stability is analyzed. Integrated receiver SNR, relative angular velocity and link performance requirements and other factors, the establishment of the expected link stability time formula. Simulink is used to establish a bi-directional laser communication link tracking simulation model, and the correctness of the theoretical formula is verified through simulation. In order to achieve a long-term stability of the inter-satellite optical communication link, a method of using different control parameters at different relative intersatellite speeds is proposed to optimize the control strategy of the inter-satellite optical communication terminal. In the future, A certain meaning.