Fast Doppler technique of observations of aspect sensitive signals backscattered from the Ionosphere heated by powerful HF radio waves

Fast Doppler measurements technique of observation of small-scale, magnetic field aligned inhomogeneities produced in the Ionosphere by powerful HF radio waves is developed. This technique is based on evaluation of “momentary” Doppler shift of received signal frequency with the help of phase measurements in individual pulse responses. Observations of backscattered aspect sensitive signals show that individual modes in multi mode signals have different dynamics at the time intervals less than 1 second.