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Národní úložiště šedé literatury Nalezeno 3 záznamů.  Hledání trvalo 0.01 vteřin. 
Interferometric measurement of optical signal in turbulence
 Kovaľová, Soňa ; Křivák,, Petr (oponent) ; Hudcová, Lucie (vedoucí práce)
The aim of this thesis is to quantify the impact of atmospheric turbulence on optical signal used in free space optic communication systems. The first part is associated with atmosphere as transmission medium. Following part deals with interferometry and components of interferometers. Various methods of analysis of trasmission environment for optical beam are introduced theoretically and experimentally. Mathematical apparatus based on Kolmogorov’s cascade theory, Rytov’s variance was used to find value of structural parameter of refraction as a main measure of turbulence intensity. Experimentally obtained data were subjected to statistical analysis. The visualization of interference pattern fluctuations under turbulent conditions is shown in the last section. Interferometric method was realized with Michelson interferometer.
Úplný záznam
Interferometric Measurement Of Optical Signal In Turbulence
 Kovaľová, Soňa
This project deals with the measuring of the impact of atmospheric turbulence on laser beam used in wireless optical communication. The method is based on interferometry with using of Michelson interferometer. Mathematical apparatus comes from Kolmogorov’s cascade theory and statistical analysis.
Úplný záznam
Interferometric measurement of optical signal in turbulence
 Kovaľová, Soňa ; Křivák,, Petr (oponent) ; Hudcová, Lucie (vedoucí práce)
The aim of this thesis is to quantify the impact of atmospheric turbulence on optical signal used in free space optic communication systems. The first part is associated with atmosphere as transmission medium. Following part deals with interferometry and components of interferometers. Various methods of analysis of trasmission environment for optical beam are introduced theoretically and experimentally. Mathematical apparatus based on Kolmogorov’s cascade theory, Rytov’s variance was used to find value of structural parameter of refraction as a main measure of turbulence intensity. Experimentally obtained data were subjected to statistical analysis. The visualization of interference pattern fluctuations under turbulent conditions is shown in the last section. Interferometric method was realized with Michelson interferometer.
Úplný záznam

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