中文摘要：

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Ca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．

英文摘要：

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.