  The analysis was carried out of the scattered signal in the cases of ground
backscatter and ionospheric scatter. The analysis is based on the data of the
decameter coherent EKB ISTP SB RAS radar. In the paper the signals scattered in
each sounding run were analysed before their statistical averaging. Based on
the analysis and on previously studied mechanisms, a model is constructed for
ionospheric scatter and ground backscatter signals. Within the framework of the
Bayesian approach and based on a large amount of the data the technique and
algorithm for separating these two types of signals are constructed. The
statistical analysis of the results was carried out based on the EKB ISTP SB
RAS data.
