摘要
电离层特征参数的实时获取和分析是电离层空间天气监测预报的重要内容.本文针对电离层频高图参数的实时自动度量和分析问题,提出了一种基于电子浓度高度剖面经验正交函数(Empirical Orthogonal Function,简称EOF)分析的频高图参数自动度量方法,并将该方法应用到位于北京空间环境观测站(40.3°N,116.2°E)的CADI(Canadian Advanced Digital Ionosonde)数字测高仪观测频高图的实时自动度量和分析上.结果表明,该方法具有较好的可靠性和通用性,能实时自动度量频高图的有关参数并反映相关的电离层变化,可作为电离层空间天气实时监测分析的一种有效手段.
The real-time automatic acquisition and analysis of the ionospheric parameters play important roles in monitoring and forecasting of the ionospheric space weather. For the automatic scaling and analysis of the ionospheric parameters, a method based on the empirical orthogonal function （EOF） analysis of the ionospheric electron density profiles is proposed in this paper. This method is applied to the measured ionograms of CADI （Canadian Advanced Digital Ionosonde）, which is set up at Beijing Space Environment Observation Station （40.3°N, 116.2°E）. The results show that the method owns good reliability and universality and can show some variations of ionosphere. So it is feasible to use this method to monitor and analyze the ionospheric space weather in real time.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第4期969-978,共10页
Chinese Journal of Geophysics
基金
国家自然科学基金项目(40574072)
中国科学院创新方向性项目(KZCX3-SW-144)资助.
关键词
频高图
电离层参数
实时
自动度量
经验正交函数
Ionogram, Ionospheric parameters, Real time, Automatic scaling, Empirical orthogonal function
