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分析了星间激光通信双向跟踪过程中,影响链路稳定性的主要因素。通过对终端跟踪误差角度的面阵探测建模,综合考虑接收端信噪比影响,分析了双向光束跟踪过程中的迭代收敛过程,推导出了更接近链路实际情况的稳定跟踪约束条件理论公式。通过仿真验证对理论分析结果进行了优化,并通过地面模拟实验,验证了结论的准确性。上述工作对今后的卫星光通信链路系统优化设计具有重要参考意义。
The main factors affecting the link stability are analyzed in the two-way tracking process of inter-satellite laser communication. By analyzing the area array of terminal tracking error, considering the influence of signal-to-noise ratio at the receiving end, the iterative convergence process in bidirectional beam tracking is analyzed, and the theoretical formula of stable tracking constraint is deduced which is closer to the actual condition of the link . Through the simulation verification, the theoretical analysis results are optimized and the accuracy of the conclusion is verified through the ground simulation experiment. The above work for the future optimization of satellite optical communication link system design has an important reference value.