At present, system design usually assumes the Kolmogorov model of refractive index fluctuation spectra in the
atmosphere. However, experimental data indicates that in the atmospheric boundary layer and at higher altitudes the
turbulence can be different from Kolmogorov's type.
In optical communications, analytical models of mean irradiance and scintillation index have been developed for a
traditional Kolmogorov spectrum and must be revised for non-Kolmogorov turbulence.
The image quality (resolution, MTF, etc.) is essentially dependent on the properties of turbulent media. Turbulence MTF
must be generalized to include non-Kolmogorov statistics. The change in fluctuation correlations of the refractive index
can lead to a considerable change in both the MTF form and the resolution value.
In this work, on the basis of experimental observations and modeling, generalized atmospheric turbulence statistics
including both Kolmogorov and non-Kolmogorov path components are discussed, and their influence on imaging and
communications through the atmosphere estimated for different scenarios of vertical and slant-path propagation. The
atmospheric model of an arbitrary (non-Kolmogorov) spectrum is applied to estimate the statistical quantities associated
with optical communication links (e.g., scintillation and fading statistics) and imaging systems.
Implications can be significant for optical communication, imaging through the atmosphere, and remote sensing.