| 天文学自适应光学成像望远镜的模拟 |
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| 引用本文： | 陆长明,饶长辉,黄惠明,邢强林. 天文学自适应光学成像望远镜的模拟[J]. 光电工程, 2006, 33(1): 20-23 |
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| 作者姓名： | 陆长明 饶长辉 黄惠明 邢强林 |
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| 作者单位： | 1. 北京跟踪与通信技术研究所,北京,100094
2. 中国科学院光电技术研究所,四川,成都,610209 |
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| 基金项目： | 高比容电子铝箔的研究开发与应用项目 |
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| 摘 要： | 为分析天文学自适应光学(AO)望远镜中AO系统的校正性能,利用Matlab仿真其成像过程。采用正交基为Zernike多项式的自相关法产生符合大气统计特性的大气相位屏,仿真平行光通过大气后的瞬时畸变波前相位;采用快速傅里叶变换仿真哈特曼-夏克波前传感器的成像光斑,根据实际成像与参考平面波成像的质心坐标之差,计算波前传感器子孔径内的平均波前斜率。模拟比较了1.2m望远镜两种AO系统布局的校正性能,结果表明,子孔径为正六边形AO系统的校正性能略优于子孔径为正方形AO系统的校正性能,两种AO系统的SR比(StrechlRatio)分别为0.872和0.859。
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| 关 键 词： | 自适应光学系统 大气湍流 仿真模拟 成像望远镜 |
| 文章编号： | 1003-501X(2006)01-0020-04 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-07-21 |
Simulation of an astronomical adaptive optics imaging telescope |
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| LU Chang-ming,RAO Chang-hui,HUANG Hui-ming,XING Qiang-lin. Simulation of an astronomical adaptive optics imaging telescope[J]. Opto-Electronic Engineering, 2006, 33(1): 20-23 |
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| Authors: | LU Chang-ming RAO Chang-hui HUANG Hui-ming XING Qiang-lin |
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| Affiliation: | 1.Beijing Institute of Track and Telecommunication Technology, Beijing 100094, China; 2.The Institute of Optics and Electronics, the Chinese Academy of Sciences, Chengdu 610209, China |
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| Abstract: | Simulation model of a typical adaptive optical system for astronomical telescopes isestablished. Atmospheric turbulence is realized by generating random phase screen. The imaging ofwavefront sensor (WFS) lenslet array is simulated by Fast Fourier Transform. Two configurations ofadaptive optics system for 1.2m telescope are simulated. By comparing the performance of twoconfigurations, we get the conclusion: Under the same conditions, the adaptive optics system withhexagon WFS is better than the adaptive optics system with square WFS. |
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| Keywords: | Adaptive optics system Atmospheric turbulence Simulation Imaging telescope |
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