激光与光电子学进展, 2015, 52 (5): 051201, 网络出版: 2015-04-02
合成口径子镜测试拼接技术
Subaperture Cophasing Technique of Segmented Mirror
摘要
为了实现合成口径非球面系统共相位,提出一套测试拼接方法。对抛物面系统面形进行曲面拟合,建立面形坐标矩阵,根据三维坐标变换矩阵直接计算出子镜平移偏摆调整量达到合成口径共相位,计算机上模拟调整得到拼接系统精度与设定精度相当。搭建了一套测试拼接系统,使用红外双波长相移干涉仪检测Φ 600 mm 抛物面子镜系统面形,根据拟合面形数据得到子镜调整量校正子镜。实验得到合成口径系统子镜失调误差与单一口径面形加工精度λ /15 相当。
Abstract
To realize co- phase of segmented asphere aperture, a calculation system is build up for testing and alignment segmented mirrors. Curve fitting the surface data of the paraboloid mirror is made to establish coordinate matrix. The position deviation of sub-apertures is calculated by using transformation matrix. The simulation result shows that the segmented aperture achieves the initial accuracy. A two wave-length interferometer is used to detect the 600 mm paraboloid segmented aperture. Depends on the tilt error calculated form the surface data, the segmented aperture position deviation can be limited in the accuracy of a single aperture λ /15.
曹睿, 赵智亮, 郑列华, 张志华, 淳于永昕, 郑万国. 合成口径子镜测试拼接技术[J]. 激光与光电子学进展, 2015, 52(5): 051201. Cao Rui, Zhao Zhiliang, Zheng Liehua, Zhang Zhihua, Chunyu Yongxi, Zheng Wanguo. Subaperture Cophasing Technique of Segmented Mirror[J]. Laser & Optoelectronics Progress, 2015, 52(5): 051201.