Effect of a modified spectrum on aperture averaging of optical scintillation

Erich L. Bass; Brian D. Lackovic; Larry C. Andrews

doi:10.1117/12.178048

29 June 1994 Effect of a modified spectrum on aperture averaging of optical scintillation

Erich L. Bass, Brian D. Lackovic, Larry C. Andrews

Proceedings Volume 2222, Atmospheric Propagation and Remote Sensing III; (1994) https://doi.org/10.1117/12.178048
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The aperture-averaging factor associated with optical scintilations of unbounded plane and spherical waves is calculated for the weak fluctuation regime using a modified spectrum of refractive-index fluctuations that features a high wave number bump. Previous analyses were based on more conventional spectral models and the results were limited to asymptotic regimes depending on the ratio of the first Fresnel zone size (L/k)^1/2 to inner scale l₀. Simple interpolation formulas are developed here for all such ratios, and comparisons of results with numerical integration values and experimental data show excellent agreement.

Citation Download Citation

Erich L. Bass, Brian D. Lackovic, and Larry C. Andrews "Effect of a modified spectrum on aperture averaging of optical scintillation", Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); https://doi.org/10.1117/12.178048

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