互功率谱矩阵法在电离层离子速度和地面Pc3—5相关分析中的应用

Cross-power Density Spectrum Matrix for Application on the Correlation between Ion Velocity and Pc3-5 Magnetic Pulsation

本文介绍利用互功率谱矩阵的本征元素,对电离层 F 层离子速度和地面 P_(C3-5)型磁脉动信号进行相关分析。借助于与传播介质物理属性相对应的附加假设,可以检测出互不相关的激发源数目。在确定只有一个信号激发源存在时,通过在谱矩阵第一本征矢量方向上的投影,可以确定出与接收机相应的源的性质及传播介质的特性,并对电离层——地面参数进行相关分析。

Byusing the eigen elements of the cross-power density spectrun matrix,an analysis is made on Ion velocity and ground P_(3-5)magnetic pulsation.With supplementary hy- pothese consistent with the physics of the middle,it may determine the number of un- correlated excitations.In the case of one excitation,from projection on the first eig- envector,it may characterize the source and middle at the sensor level,and analyse the relation on ionosphere-ground.