铁路运输与国民经济发展关系的交叉谱分析方法研究  

Cross-spectra Analysis on Relationship between Railway Transportation and National Economy

作　　者：武旭[1] 王瑞军[1] 胡思继[1] 

机构地区：[1]北京交通大学交通运输学院,北京100044

出　　处：《中国软科学》2011年第5期169-175,共7页China Soft Science

摘　　要：根据相关性原理得出铁路运输指标和经济指标时间序列间的互协方差函数和互相关函数,利用图基-汉宁窗的截尾傅氏变换计算铁路运输指标和经济指标序列间的同相谱和正交谱估计值,表征两者的相关程度、超前滞后关系以及超前和滞后的时间差。实际数据计算结果表明中国铁路运输业的发展基本上滞后于国民经济增长2~3个月。According to the correlation theories,the cross covariance and cross-correlated functions between the railway transportation and economic indicator time series are calculated.Cospectrum and quadrature spectrum estimation that reflect the leading or lagging relationship is conducted on railway transportation and economic indicator time series by the Tukey-Hanning Window-based Censored Fourier Transform.The calculated result using practical data demonstrates that the development of railway transportation lagging two or three months behind the economic development

关 键 词：铁路运输 国民经济 交叉谱 互振幅谱 相位谱 

分 类 号：F512.5[经济管理—产业经济]