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《Chinese Journal of Geophysics》 1996-01
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AN ANALYSIS METHOD OF NONUNIFORM IONOSPHERIC DISTURBANCES FROM ARRAY OBSERVATION

WAN WEI-XING;YUAN HONG;LIANG JUN(Wuhan Institute of Physics,Academia Sinica,Wuhan,430071, Chinas)  
Large scale ionospheric disturbances such as TIDs are generally unstationary,dispersive,and nonuniform.Firstly,this paper gives the observation equations relating observable quantities of array observation with propagating parameters of disturbance field.Then,the time-frequency analysis method for the observation equations is introduced.This newly developed method can both differentiate various quasi-uniform components from nonuniform ionospheric disturbances,and obtain the evolution of propagating parameters of quasi-uniform components versus time as well as dispersion versus frequency.Instance Analysis shows that this method,with fine resolution,high precision,and reliable result,is effective on array observation analysis of large scale ionospheric disturbances.
【Fund】: 国家自然科学基金
【CateGory Index】: P352
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