| 自适应光学系统倾斜校正回路的最优闭环带宽 |
| |
| 引用本文： | 郭友明,马晓燠,饶长辉.自适应光学系统倾斜校正回路的最优闭环带宽[J].物理学报,2014,63(6):69502-069502. |
| |
| 作者姓名： | 郭友明 马晓燠 饶长辉 |
| |
| 作者单位： | 1. 中国科学院光电技术研究所, 成都 610209;2. 中国科学院自适应光学重点实验室, 成都 610209;3. 中国科学院大学, 北京 100049 |
| |
| 基金项目： | 国家自然科学基金联合基金(批准号:11178004);中国科学院光电技术研究所研究生创新基金(批准号:2013.2)资助的课题~~ |
| |
| 摘 要： | 基于实际自适应光学系统倾斜校正回路最常使用的比例积分控制器,分析了最优闭环带宽与大气湍流、测量噪声之间的关系.利用满足Kolmogorov湍流整体倾斜功率谱密度的时间序列进行了相关的数值仿真.结果表明,根据不同湍流强度及测量噪声选择合适的闭环带宽,可以充分发挥自适应光学系统倾斜校正回路的闭环校正能力,减小闭环残差.
|
| 关 键 词： | 自适应光学 倾斜校正 Tyler频率 最优闭环带宽 |
| 收稿时间： | 2013-10-14 |
Optimal closed-loop bandwidth of tip-tilt correction loop in adaptive optics system |
| |
| Guo You-Ming,Ma Xiao-Yu,Rao Chang-Hui.Optimal closed-loop bandwidth of tip-tilt correction loop in adaptive optics system[J].Acta Physica Sinica,2014,63(6):69502-069502. |
| |
| Authors: | Guo You-Ming Ma Xiao-Yu Rao Chang-Hui |
| |
| Abstract: | Based on the most widely used proportional-integrator controller of the tip-tilt correction loop in an adaptive optical system, the relationship between the optimal closed-loop bandwidth and the atmosphere turbulence as well as the sensor noise is analyzed. Numerical simulation is also performed by using the time serial signals that follow the power spectrum density of the global tilt of Kolmogorov turbulence. Results show that with different atmosphere turbulences and sensor noises, the correction capability of the tip-tilt correction loop can be brought into full play by choosing appropriate closed-loop bandwidth and the residual variance can be reduced.
Keywords：
adaptive optics
tip-tilt tracking
Tyler frequency
closed-loop bandwidth |
| |
| Keywords: | adaptive optics tip-tilt tracking Tyler frequency closed-loop bandwidth |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《物理学报》浏览原始摘要信息 |
| 点击此处可从《物理学报》下载免费的PDF全文 |
