Method for Measuring the Second-Order Moment of Atmospheric Turbulence
文献类型：期刊论文
| 作者 | Shen, Hong2; Yu, Longkun3 ; Jing, Xu1; Tan, Fengfu1
|
| 刊名 | ATMOSPHERE
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 12 |
| 关键词 | adaptive optics atmospheric effects instrumentation site testing |
| DOI | 10.3390/atmos12050564 |
| 通讯作者 | Yu, Longkun(yulongkun@aiofm.ac.cn) |
| 英文摘要 | The turbulence moment of order m (mu(m)) is defined as the refractive index structure constant C-n(2) integrated over the whole path z with path-weighting function z(m). Optical effects of atmospheric turbulence are directly related to turbulence moments. To evaluate the optical effects of atmospheric turbulence, it is necessary to measure the turbulence moment. It is well known that zero-order moments of turbulence (mu(0)) and five-thirds-order moments of turbulence (mu(5/3)), which correspond to the seeing and the isoplanatic angles, respectively, have been monitored as routine parameters in astronomical site testing. However, the direct measurement of second-order moments of turbulence (mu(2)) of the whole layer atmosphere has not been reported. Using a star as the light source, it has been found that mu(2) can be measured through the covariance of the irradiance in two receiver apertures with suitable aperture size and aperture separation. Numerical results show that the theoretical error of this novel method is negligible in all the typical turbulence models. This method enabled us to monitor mu(2) as a routine parameter in astronomical site testing, which is helpful to understand the characteristics of atmospheric turbulence better combined with mu(0) and mu(5/3). |
| 资助项目 | National Natural Science Foundation of China[61665004] ; National Natural Science Foundation of China[41605007] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000653410300001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/122197]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yu, Longkun |
| 作者单位 | 1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei 230031, Peoples R China 2.Jiujiang Univ, Sch Sci, Jiujiang 332005, Peoples R China 3.Nanchang Univ, Informat Engn Sch, Nanchang 330031, Jiangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Hong,Yu, Longkun,Jing, Xu,et al. Method for Measuring the Second-Order Moment of Atmospheric Turbulence[J]. ATMOSPHERE,2021,12. |
| APA | Shen, Hong,Yu, Longkun,Jing, Xu,&Tan, Fengfu.(2021).Method for Measuring the Second-Order Moment of Atmospheric Turbulence.ATMOSPHERE,12. |
| MLA | Shen, Hong,et al."Method for Measuring the Second-Order Moment of Atmospheric Turbulence".ATMOSPHERE 12(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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