摘要
提出了"时间序列频率特征参数相似日"和"时间序列时频双特征参数相似日"的电离层参数(F2层临界频率)短期预测方法,利用中国9个电离层观测台站一个太阳活动周(1977~1987年)的F2层临界频率数据对提前1~24h预测的精度进行了测试。结果表明:相对于现有的一些短期预测方法,相似日的预测精度有明显改善,该方法简便、有效,具有实际工程应用价值。
Two methods for the prediction of the ionospheric parameters,the frequency domain characteristic parameters similar days,the time and frequency domain dual characteristic parameters similar days,are presented.A large quantity of data from nine ionospheric observation stations in China within a solar activity cycle(1977~1987) is used to test the validity of this method,and the result indicates that,compared with some available methods,the similar days method gives a more accurate result.The method developed here has the characteristic of simplicity and effectiveness,and is valuable for the application in real engineering.
出处
《电波科学学报》
EI
CSCD
北大核心
2010年第2期240-247,共8页
Chinese Journal of Radio Science
基金
国家基础研究项目
国家自然科学基金项目(编号60771049)
关键词
电离层
短期预测
临界频率
相似日
ionosphere
short-term forecast
critical frequency
similar days