基于搜索优化的“FAST”主动面板调节方案设计

Design of active reflector adjustment scheme for“FAST”based on search optimization

针对FAST的主动反射面的形状调节问题,建立了初始条件下理想工作面的计算模型。将理想接收面同射电望远镜物理约束条件结合,建立了基于软约束的多目标优化模型,利用搜索法求解,得到了约束条件下工作面反射面板最优调解方案。利用几何光学性质,建立了基于蒙特卡洛法的馈源舱接收比评估模型,量化评估反射面板接收信号效果。

Aiming at the shape adjustment of active reflector of“FAST”,a calculation model of the ideal working surface under initial conditions is established in this paper.Combining the ideal receiving surface with the physical constraints of the radio telescope,a multi-objective optimization model based on soft constraints is established,which is solved by the search method,and the optimal adjustment scheme of the working surface reflector under constraints is obtained.Based on the geometrical optical properties,a receiving ratio evaluation model of the feed cabin based on Monte Carlo method is established to quantitatively evaluate the signal received by the reflector.