Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Leonid M. Veselov"'
Publikováno v:
Optics Communications. 134:289-300
A mathematical model for image plane non-Gaussian speckle is proposed. Analytical expressions are derived for dispersion of intensity fluctuations, intensity correlation function and power spectrum of scattered intensity fluctuations. An experiment c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c088af96602a5c7962249d9133dd91dd
https://doi.org/10.1016/s0030-4018(96)00540-8
https://doi.org/10.1016/s0030-4018(96)00540-8
Publikováno v:
Optics and Lasers in Engineering. 25:303-310
The statistical properties of scattered coherent radiation from a rough body arbitrarily moving in its own plane are analysed. Three cases of optical geometry are considered: the free space, image plane of an optical system, and the focal plane of an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::920303b5c1a66e94ebaa1e9d13164f45
https://doi.org/10.1016/0143-8166(95)00077-1
https://doi.org/10.1016/0143-8166(95)00077-1
Autor:
Leonid M. Veselov, Ivan A. Popov
Publikováno v:
Optics Communications. 105:167-170
The statistical properties of scattered coherent radiation from a rough body arbitrarily moving in its own plane analyzed. In terms of this analysis, the expressions for the space-time intensity correlation function and the power spectrum are derived
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::422064bd234830f42e23d0eac60b3db7
https://doi.org/10.1016/0030-4018(94)90708-0
https://doi.org/10.1016/0030-4018(94)90708-0
Publikováno v:
Optics Communications. 97:304-306
The results of experimental study on the probability density function in case when a number of scatterers in the resolution element of the optical system is small are presented in this paper. The measurements have been carried out with ground glass a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d5b53d6e6461946d345695fc4b098a6
https://doi.org/10.1016/0030-4018(93)90493-o
https://doi.org/10.1016/0030-4018(93)90493-o
Publikováno v:
Fourth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications.
The statistical properties of photodetector current noise in Doppler and grating schemes are analyzed; in particular, the effect of speckle averaging over the receiving aperture is discussed. It is shown that in the typical configurations of both sch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::996661ebfd689e322ccbbdc8deafddf7
https://doi.org/10.1117/12.386770
https://doi.org/10.1117/12.386770
Publikováno v:
International Conference on Correlation Optics.
The statistical properties of non-Gaussian speckle in the image plane of the optical system are considered. The analytical expressions are derived for dispersion of intensity fluctuations, intensity correlation function and power spectrum of scattere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7630a83b73449dbf1f73c062651a4abe
https://doi.org/10.1117/12.295698
https://doi.org/10.1117/12.295698
Autor:
Leonid M. Veselov, Ivan A. Popov
Publikováno v:
SPIE Proceedings.
The use of transmission grating for measurement of rough body tangential velocity is discussed. The possibility of obtaining narrow component in the spectrum of scattered from rough surface and transmitted through the grating radiation is confirmed b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f871f7b510ae92d4c1c44b9c4b62c2c
https://doi.org/10.1117/12.248681
https://doi.org/10.1117/12.248681
Autor:
Ivan A. Popov, Leonid M. Veselov
Publikováno v:
SPIE Proceedings.
ofmodulatcd dynamic spcckieLconid M Vcsclov and Ivan A PopovResearch Center "Vavilov State Optical Institute"Institute for Complex Testing ofOptoclectronic DevicesSosnovy Bor Leningrad region 188537 RussiaABSTRACTThe new method to measure rough body
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24a2b654ace3f5a2806b756319265f53
https://doi.org/10.1117/12.248677
https://doi.org/10.1117/12.248677
Autor:
A. N. Starchenko, Vitaly L. Okulov, A. S. Sakjan, N. I. Scherbakova, Nikolay V. Sidorovsky, Jury A. Rezunkov, Leonid M. Veselov
Publikováno v:
SPIE Proceedings.
The measurements of carbon-dioxide-laser radiation scattering in the atmosphere were carried out in the angle range of 7 - 65 degrees under the various weather conditions. The empirical parameters of the indicatrix of scattering were evaluated.© (19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6e0dec426bdec402e8dcecfe11f4f08
https://doi.org/10.1117/12.238515
https://doi.org/10.1117/12.238515
Autor:
Ivan A. Popov, Leonid M. Veselov
Publikováno v:
Conference on Lasers and Electro-Optics Europe.
Up to now, several methods for velocity measurement using speckle dynamics have been proposed. They are based on the varlation of the correlation function or the power spectrum of speckle intensity. These methods are simple and rapid to apply to meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::321dab7ef757306506438c0482329944
https://doi.org/10.1364/cleo_europe.1996.cwf51
https://doi.org/10.1364/cleo_europe.1996.cwf51