Modelling synthetic atmospheric turbulence profiles with temporal variation using Gaussian mixture model
Modelling synthetic atmospheric turbulence profiles with temporal variation using Gaussian mixture model
复制标题
使用高斯混合模型对具有时间变化的合成大气湍流剖面进行建模
DOI:
10.1093/mnras/sty1951
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发表时间:
2018
影响因子:
4.8
通讯作者:
Jia P
中科院分区:
文献类型:
--
作者:
Jia P
The atmospheric turbulence profile plays a very important role for performance evaluation of wide-field adaptive optic systems. Since the atmospheric turbulence is evolving, the turbulence profile will change with time. To better model the temporal variation of turbulence profile, in this paper, we propose to use the extensive stereo-SCIDAR turbulence profile dataset from one observation site to train a Gaussian mixture model. The trained Gaussian mixture model can describe the structure of the turbulence profile in that particular site with several multidimensional Gaussian distributions. We cluster the turbulence profile data with the Gaussian mixture model and analyse the temporal variation properties of the clusters. We define the characteristic time as the time that the measured turbulence profile remains in a given profile. We find that normally the characteristic time is around 2 to 20 min and will change at different sites and in different seasons. With the statistical results of the characteristic time and the trained Gaussian mixture model, we can generate synthetic artificial turbulence profiles with realistic temporal variation to better test the performance of adaptive optics systems.
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影响因子:
1.9
作者:
Lianqi Wang;D. Andersen;B. Ellerbroek
通讯作者:
B. Ellerbroek
影响因子:
7
作者:
Vrieze, Scott I.
通讯作者:
Vrieze, Scott I.
影响因子:
4.8
作者:
H. Shepherd;J. Osborn;R. Wilson;T. Butterley;R. Avila;V. Dhillon;T. Morris
通讯作者:
H. Shepherd;J. Osborn;R. Wilson;T. Butterley;R. Avila;V. Dhillon;T. Morris
DOI:
--
发表时间:
2012
期刊:
Other Conferences
影响因子:
--
作者:
O. Martin;E. Gendron;G. Rousset;F. Vidal
通讯作者:
F. Vidal
影响因子:
1.9
作者:
Basden A
通讯作者:
Basden A