A Study of Radio Inversive Method of Ionospheric Isorefractive Index Surface Motion Velocity Profile

In the first part of this paper,three inversive methods for the ionospheric isorefactive index surface motion velocity profile are discussed summarily.In the second part of this paper,the theoretical value of Dopple shift of echoes for a given electron density distribution profile model (Chapman Model) and a given velocity profile of isorefractive index surface are calculated.Then,the velocity profiles are calculated with three inversive methods to examine the method itself respectively.The results show the method using O-wave and X-wave's Doppler shift data simultanosuly is the best moreover the responsibility of the disturbance in the space where there is no trace in the dopplerionogram (below h_min) for the Doppler shift of echoes can be calculated with this method.