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Measurements of angle-of-arrival fluctuations over an 11.8 km urban path

Published online by Cambridge University Press:  21 January 2010

Wenhe Du ,
Liying Tan ,
Jing Ma ,
Siyuan Yu  and
Yijun Jiang
Wenhe Du*
Affiliation:
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China College of Science, Qiqihaer University, Qiqihaer, Heilongjiang, China
Liying Tan
Affiliation:
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
Jing Ma
Affiliation:
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
Siyuan Yu
Affiliation:
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
Yijun Jiang
Affiliation:
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
*
Address correspondence and reprint requests to: W. Du, National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China. E-mail: whduhit@gmail.com
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Abstract

A laser transmission experiment is conducted to examine atmospheric turbulence-induced angle-of-arrival fluctuations over an 11.8 km urban path. The variance of fluctuations, probability density function, power spectrum, and Fried coherence length are investigated based on the analysis of the experimental data collected in each season of a year, respectively. In addition, the daily variations characteristic of path-averaged optical turbulence intensity Cn2 is also studied. At last, the aperture averaging theory is validated. It is anticipated that this work is helpful to the research of optical wave atmospheric propagation and the design of free-space laser optics communication systems.

Keywords

Atmospheric opticsAtmospheric propagationAtmospheric turbulenceFree space laser optics communicationLaser beam transmission

Information

Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 1 , March 2010 , pp. 91 - 99
Copyright
Copyright © Cambridge University Press 2010

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