Diffraction problem solution for bistatic zone of Radio Acoustic Sounding Systems

Meteorological parameters measurement on the lower route segment of sounding with modern radio acoustic systems is hampered due to a significant procedure error. The problem solution conditions are presented, the possibility to use Fresnel approximation is substantiated, the sequence of derivation of the analytical expression derivation of the signal being received is shown, the algorithm of numerical definition of the procedure additions to the amplitude and Doppler frequency shift stipulated by the sounding system bistatic nature, is described.