Full text of article: Russian language.

Abstract:
The article deals with the development of a technique for increase of signal/noise ratio in speckl-interferograms improving accuracy and trustworthiness of results obtained in the course of structural elements vibration characteristics for optic patterns with smooth base wave and separated bundles and method of its application.

Key words:
speckl-interferometry, laser speckle, signal/noise ratio, vibration measurement.

References:

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2. Zhuravlyov, O.A. Development of a computer-aided technigue for power-plant vibration characteristics study / O.A. Zhuravlyov, S.Y. Komarov, K.N. Popov, A.B. Prokofiev // Computers Optics. – 2001. – V. 21. – P. 7-11. – (In Russian).
   
3. Osipov, M.N. Small dynamic displacements measurement with Michelson interferometer with spherical wave fronts / M.N. Osipov, M.A. Popov // Computers Optics. – 2007. – V. 31, N 4. – P. 55-57. – (In Russian).
   
4. Elenevsky, D.S. Application of holographie and speckl – interferometry for mechanic structures vibration and noise study / D.S. Elenevsky O.A. Zhuravlyov, Y.N. Shaposhnikov, Y.D. Shcheglov, S.Y. Komarov; edited by V.P. Sho­rin. – Samara: Samara State Aerospace University, 2005. – 193 p. – (In Russian).
   
5. Jones, R Holographic and Speckle Interferometry / R. Jones, C. Wykes. – Moscow: “Mir” Publisher, 1986. – 328 p. – (In Russian).
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