The improvement of acoustic compatibility of a city sodar antenna


  • Yurii N. Ulianov National Technical University "Kharkiv Polytechnic Institute", Ukraine
  • M. M. Smirnov National Technical University "Kharkov Polytechnic Institute", Ukraine
  • G. Y. Martynenko National Technical University "Kharkov Polytechnic Institute", Ukraine



horn sodar antenna, spurious emission, mechanical resonance, far lobes, finite-element method, natural frequency, solid, electro-acoustic analog method


Wide application of sodars for ecological use in cities is restrained now due to a high spurious radiation level of modern sodar antennas, especially at the angle of about 90º with respect to its main lobe. By an example of the developed sodar horn-reflex antenna, the possibility of essential improvement of its acoustic compatibility necessary for using it in cities is shown. It is shown that the improvement can be achieved as a result of the analysis of mechanical characteristics of an acoustic antenna construction with subsequent tuning out mechanical resonance frequencies of the construction at the expense of variations of its mass and rigid properties. The results of numerical experiments confirm reality of the supposition about the possibility to increase the level of suppression of extraneous sodar antenna radiation up to 60 dB on the basis of the proposed procedure.


KRASNENKO, N.P. Acoustic Sounding of the Boundary Atmospheric Layer.Tomsk:Vodoley, 2001 [in Russian].

CRESCENTI, G.H. A look back on two decades of Doppler sodar comparison studies. Bull. Amer. Meteorol. Society, Apr. 1997, v.78, n.4, p.651-673, doi:;2.

ULYANOV, Y.N.; BUTAKOVA, S.V. Antenna for vertical acoustic atmospheric sounding over airdrome. Proc. of 13th Int. Crimean Conf. on Microwave and Telecommunication Technology, CriMiCo 2003, 8-12 Sept. 2003, Sevastopol, Crimea, Ukraine. IEEE, 2003, p.788-790, doi:

MYACHENKOV, V.I.; MALTSEV, V.P.; MAIBORODA; ET AL. Calculations of Machine-Building Designs by the Finite-Element Method: Handbook. Moscow: Mashinostroenie, 1989 [in Russian, ed. by V.I. Myachenkov].

SEMENCHENKO, B.A. Physical Meteorology. Moscow: Aspekt Press, 2002 [in Russian].

SAPOZHKOV, M.A. Electro-Acoustics. Moscow: Svyaz, 1978 [in Russian].

VAINSHTEIN, L.A. The Theory of Diffraction and the Factorization Method. Moscow: Sov. Radio, 1966 [in Russian].

BUTAKOVA, S.V. Using of the solution for a flat waveguide at the analysis of radiations for the open end of a rectangular waveguide. Antenny, 2002, n.12, p.48-54.

AIZENBERG, G.Z. Ultrashort Waves Antennas. Moscow: Goslitizdat, 1957 [in Russian].