A new measurement of atmospheric coherent length using differential image motion

Atmospheric coherence length indicated the intensity of turbulence has the characteristics of regional and temporal variations. Real-time measuring the change of atmospheric coherence length and grasping its rules is a primary job for researching on laser propagation in atmosphere. In view of the de...

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Bibliographic Details
Published in2016 11th International Symposium on Antennas, Propagation and EM Theory (ISAPE) pp. 264 - 267
Main Authors Jun Ao, Jingqiu Liu, Chunbo Ma
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2016
Subjects
Adaptive optics
Atmospheric coherence length
Atmospheric measurements
atmospheric turbulence
Coherence
differential image motion
Extraterrestrial measurements
Length measurement
Optical imaging
Telescopes
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Summary:Atmospheric coherence length indicated the intensity of turbulence has the characteristics of regional and temporal variations. Real-time measuring the change of atmospheric coherence length and grasping its rules is a primary job for researching on laser propagation in atmosphere. In view of the deficiency of the existing measurement method in portability and economy, a new measurement of atmospheric coherent length using electronic eyepiece and image processing is proposed. The error factors of experiment system are analyzed, and the feasibility of the method is proved with the aid of the data gained from temperature fluctuation instrument. Finally, the characteristics of atmospheric turbulence in Guilin are analyzed using the experiment results.
DOI:10.1109/ISAPE.2016.7833935