Multi-frequency translucency of perturbed stellar corona by signals of discrete space sources

Boundary-value trajectory problem has been solved for diagnostics of localized plasma ejections of stellar corona based on data from multi-frequency electromagnetic translucency by signals of discrete space sources. System of light equations in spherical case has been taken as original and added by equation for calculation of signal group delay. Solution has been received in approximation of disturbance method with take into account of strong trajectory variations. Functional relations linking of group delays of signals of translucency on various working frequency with parameters of 3$d$-dimention structure of stellar corona ejection has been received. Opportunity of determination of density of regular frontal part of ejection according to the data of multi-frequency measurements of group delays of signals of translucency is shown. For estimation of parameters of coronal ejection it’s recommend to use data of measurements of group delays of signals of translucency in radio-range and data of optical observations.