Estimation of the density of dislocations of the wavefront due to atmosphere

Dmitri Kouznetsov; Roberto Ortega-Martinez

doi:10.1117/12.178012

29 June 1994 Estimation of the density of dislocations of the wavefront due to atmosphere

Dmitri Kouznetsov, Roberto Ortega-Martinez

Proceedings Volume 2222, Atmospheric Propagation and Remote Sensing III; (1994) https://doi.org/10.1117/12.178012
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

Distortions of the wave front in the Earth 'a atmosphere is discuued. The approximation of distortions of the wave localized in the thin layer is considered. The model to construct random realizations of the field with the given structure function is suggested. But the lower atmospheric layers give relatively small contribution to the distortion of wavefronts. In the first approximation the role of the thickneBB of the atmosphere may be described by the linear diffraction equation. It gives the estimation of the density of the dislocations of the wave front of the initial plane wave. It is shown that for this case this density is less than 1 dislocation per 100 square meters, at least for the good seeing condition. Recommendations to use flexible mirrors if the optical path in the atmosphere is leas than 10 km. and the segment mirror if the optical path is greater than 50 km. are suggested. The short program to simulate the wave fronts realizations to count dislocations is supplied.

Citation Download Citation

Dmitri Kouznetsov and Roberto Ortega-Martinez "Estimation of the density of dislocations of the wavefront due to atmosphere", Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); https://doi.org/10.1117/12.178012

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