Acoustic speckle - interferometry methods on coordinate estimation of moving sound source in inhomogeneous medium

• Autorzy: Svet V. , Kondratieva T. , Zuikova N.
• Konferencja: Proceedings of the 2 nd EAA International Symposium on Hydroacoustics 24-27 May 1999, Gdańsk-Jurata POLAND
• Języki publikacji: EN

Abstrakty

EN

The new approach on estimation of the coordinates of moving acoustic source in inhomogeneous medium with a strong scattering is discussed. The foundation of new approach is the speckle-interferometry methods (SIM), based on correlation features of multi-wave or scattered angle spectrums. It is shown that SIM can provide the same angle (linear) resolution in inhomogeneous medium as for free space. Same results of computer simulation and experiments are presented. In the first group of experiments the High-Speed 2D-Imaging Ultrasound Camera was used on frequency 1 MHz in water layer with a strong scattering screen in front of acoustical lens. In the second case the trajectory of drilling profile has been reconstructed by SIM processing of low-frequency signals (15-90) Hz, generated by rotator bit, and received by two crossed linear arrays. The results of SIM procedures are compared with the profile estimated before by inclinometers.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 1999
• Tom: Vol. 2
• Strony: 341--344
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Svet V.

• Federal Science Center N.N.Andreyev Acoustical Institute, Shvemik Str.-4, Moscow, 117036, RUSSIA

autor

Kondratieva T.

• Federal Science Center N.N.Andreyev Acoustical Institute, Shvemik Str.-4, Moscow, 117036, RUSSIA

autor

Zuikova N.

• Federal Science Center N.N.Andreyev Acoustical Institute, Shvemik Str.-4, Moscow, 117036, RUSSIA

Bibliografia

• 1. V.D. Svet. Experimental Reconstruction of Sound Source Field in a Wavegudie, Acoustical Physics, v.36, N 4, pp.733-739 (1990)
• 2. V.D. Svet, T.V.Kondratieva, N.V.Zuikova. Application of acoustic speckle -interferometry in some problems of ocean acoustics, Acoustical Physics, v.42, No 2,pp.225- 231,(1997)
• 3. V.D. Svet, T.V.Kondratieva, N.V.Zuikova. Ranging on the target buried under the scattering layer. Acoustical Physics, v.43, N 2 pp. 187-193, (1997),
• 4. V.D. Svet., Kondratieva T.V., Zuikova N.V. Trajectory estimation of moving target in the medium with a strong scattering. Acoustical imaging, V.23. pp.555-562. Plenum Press, NY, (1997)
• 5. V.D. Svet, T.V.Kondratieva, N.V.Zuikova Estimation of angle shifts of moving source in multi-mode waveguide, Acoustical Physics, v.44, N 2, pp.220-225, (1998)
• 6. V.D. Svet, T.V.Kondratieva, N.V.Zuikova, On the Application of Acoustical Speckle-Interferometry for estimation of drilling profile, Acoustical Physics (bas to be published in N 1,1999)
• 7. V.D Svet., V.I. Sizov., S.V Baikov, High Speed Ultrasound 20- Imaging Camera. Acoustical imaging V.23, pp.255-260. Plenum Press, NY, (1997)