Characterizing daytime wind profiles with the wide-field Shack-Hartmann wavefront sensor
文献类型：期刊论文
| 作者 | Wang, Zhiyong1,3; Zhang, Lanqiang1; Rao, Changhui1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 483期号:4页码:4910-4921 |
| ISSN号 | 0035-8711 |
| 关键词 | atmospheric effects instrumentation: adaptive optics Sun: granulation |
| DOI | 10.1093/mnras/sty3417 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Knowledge of the vertical spatio-temporal distribution of the wind speed and direction is essential for optimizing the performance of adaptive optics systems. An extension of SLODAR (slope detection and ranging) can be used for wind profiling by tracking the time-delayed cross-correlation peaks obtained from the slope of the Shack-Hartmann wavefront sensor. This wind-profiling method works well in situations where the cross-correlation peaks can be individualized, but in many cases the isolated cross-correlation peaks for each turbulent layer are difficult to find in the 2D cross-correlation maps, which can result in difficulties when estimating the wind profiles. To address this problem, we propose a method to measure the wind speed and direction of each layer. The method distinguishes isolated peaks more easily and is valid for multiple peaks, even for a weak response. Instead of tracking peaks in 2D cross-correlation maps, the proposed method traces a series of cross-correlation peaks in the curves of Ill slices through the maps from different directions, and finally determines the wind speed and direction according to the frozen-flow hypothesis. This method is verified with simulations, in which the input wind profiles are recovered accurately. Furthermore, this method is applied to 47 data sequences from the 1-m New Vacuum Solar Telescope at Fuxian Solar Observatory. The wind profiles are estimated from the ground up to 12 km, and the experimental results show that all layers move with a relatively low speed. |
| 出版地 | OXFORD |
| WOS关键词 | ADAPTIVE OPTICS ; ATMOSPHERIC-TURBULENCE ; SLODAR ; ALTITUDE |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000462281900048 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/9744]  |
| 专题 | 光电技术研究所_自适应光学技术研究室（八室） |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Adapt Opt, POB 350, Chengdu 610209, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Opt & Elect, Lab Adapt Opt, POB 350, Chengdu 610209, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhiyong,Zhang, Lanqiang,Rao, Changhui. Characterizing daytime wind profiles with the wide-field Shack-Hartmann wavefront sensor[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,483(4):4910-4921. |
| APA | Wang, Zhiyong,Zhang, Lanqiang,&Rao, Changhui.(2019).Characterizing daytime wind profiles with the wide-field Shack-Hartmann wavefront sensor.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,483(4),4910-4921. |
| MLA | Wang, Zhiyong,et al."Characterizing daytime wind profiles with the wide-field Shack-Hartmann wavefront sensor".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 483.4(2019):4910-4921. |
入库方式： OAI收割
来源：光电技术研究所
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