The questions related to the choice of effective frequency of sounding signal in the acoustic sounding systems of the ground layers of atmosphere in the district of airport are investigated and presented. For an achievement of big heights it is necessary that the sounding signal frequency does not exceed 1 kHz. However in this range the noise level from airliners is high in an airport. To provide flight safety in an airport it is impotent to know the wind parameters on small heights, therefore researches are fulfiled for sounding signal frequencies of 3 kHz and 5 kHz. The parameter evaluation accuracy of the sounding acoustic signal reflected from an atmosphere inhomogeneity is defined by the statistical simulation technique with the adaptive suppression process of the airliners interference. The conducted experiments show that for these sounding signals frequencies the estimation accuracy of the reflected signal frequency depends negligibly on the chosen frequency. So, the sounding signal frequency may be changed in a wide range during sounding system operation near-by an airport, with taking into account descriptions of interference spectrums. Experiments were conducted for the acoustic interference created by the airliners Boeing 707 and Boeing 737. It is shown also, that application of the adaptive lattice filters and adaptive filters with the finite impulse response (FIR) for suppression of the acoustic interference created by airliners in airports substantially brings down the interference influence on the estimation accuracy of a wind speed measured by acoustic sounding systems. At weak acoustic interference and noise level application of the adaptive lattice filters and filters with FIR gives approximately identical results, and at considerable noise levels the use of the latticed filters is more preferable. The research results comport with conclusions on the practical application of adaptive lattice filters and linear prediction filters with FIR.