建立了以相干光束阵列作为光源的中继镜系统模型,光源相位分布由随机并行梯度下降算法优化控制;定义了上行接收光束强度分布不均匀影响因子并分析了上行传输过程的评价函数;在H-V5/7模型大气湍流条件下分别计算了以相干光束阵列作为光源和以平台截断光束作为光源的中继镜系统的上行传输效能。结果显示,利用随机并行梯度算法控制多光束相干合成实现中继镜系统光束上行传输,系统上行传输能量耦合效率和上行接收光束强度均匀性均得到了有效的提高。对10 km上行传输过程,系统评价函数由0.6730提升至0.8838;对30 km上行传输过程,系统评价函数由0.4266提升至0.8560。 The model of relay mirror with coherent beam array as light source is established. The phase distribution of light source is optimized and controlled by stochastic parallel gradient descent algorithm. The influence factor of uneven beam intensity distribution in uplink is defined and the evaluation function of uplink transmission is analyzed. -V5 / 7 model under the condition of atmospheric turbulence, the uplink transmission performance of the relay mirror system with the coherent beam array as the light source and the platform truncated beam as the light source is calculated respectively. The results show that using the parallel parallel gradient algorithm to control the multi-beam coherent combination to achieve the upward transmission of the beam in the relay-mirror system, the coupling efficiency of the uplink transmission energy and the uniformity of the intensity of the upstream received beam have been effectively improved. For 10 km uplink transmission, the system evaluation function increased from 0.6730 to 0.8838; for the 30 km uplink transmission, the system evaluation function increased from 0.4266 to 0.8560.