中国激光, 2013, 40 (s1): s102007, 网络出版: 2013-12-25
延迟随机并行梯度下降算法用于相干合成中倾斜控制的数值模拟
Numerical Simulation of Tilt-Tip Control in Coherent Beam Combining Using Delayed-Stochastic Parallel Gradient Descent Algorithm
激光光学 相干合成 倾斜波前 延迟随机并行梯度下降算法 主动控制 laser optics coherent beam combining tilt-tip wavefront delayed-stochastic parallel gradient descent algor active control
摘要
对延迟随机并行梯度下降(D-SPGD)算法在远距离相干合成中倾斜控制进行系统研究,并与传统的随机并行梯度下降(SPGD)算法进行对比。理论研究结果表明,该算法可以明显降低传输延时对控制带宽的限制,显著提高远距离系统倾斜控制的效果,有望在远距离相干合成系统中得到实际应用。
Abstract
The systematic research on tilt-tip control in coherent beam combining using delayed-stochastic parallel gradient descent (D-SPGD)algorithm is demonstrated. The control effects are compared with those of the traditional stochastic parallel gradient descent (SPGD) algorithm. The theoretical research results reveal that the D-SPGD algorithm can weaken the limitation of time-delay on control bandwidth, and improve the tilt-tip control effect of long-distance system obviously. D-SPGD algorithm is a promising method to be applied in practical system of coherent beam combining over long distance.
王雄, 王小林, 周朴, 许晓军, 舒柏宏. 延迟随机并行梯度下降算法用于相干合成中倾斜控制的数值模拟[J]. 中国激光, 2013, 40(s1): s102007. Wang Xiong, Wang Xiaolin, Zhou Pu, Xu Xiaojun, Shu Bohong. Numerical Simulation of Tilt-Tip Control in Coherent Beam Combining Using Delayed-Stochastic Parallel Gradient Descent Algorithm[J]. Chinese Journal of Lasers, 2013, 40(s1): s102007.