The Influence of Turbulent Atmosphere, Molecular-Aerosol Scattering and Board Optical Device on the Satellite Video-Information Quality at the Earth’s Remote Sensing from Space
Abstract:
The actual problem influence of the developed atmospheric turbulence and multiple light molecular-aerosol scattering at board satellite devices spatial-frequency permission and received from space a videoinformation quality about the environment has been considered. Given consideration has been carried out in a frame of the linear optical system’s theory and optical signals Fourier transformations. Representative data of the structural function vertical dependence of developed atmospheric turbulence and board satellite devices parameters, formed the space environment’s, including the advanced modeling data about spatial-frequency filtration by the molecular-aerosol Earth’s atmosphere in a visual spectral region (λ=400-800nm) have been used. Optical transfer functions of atmospheric “turbulence- molecular-aerosol scattering-board satellite device” complex system have been calculated. It is shown, that in during of remote sensing of the Earth from space the quality of environment’s satellite images and spectral brightness’s, including a spatial frequence permission of a the board optical devices of middle (Δ~101–102)́ and low (Δ~103–104)́ spatial frequence permission don’t dependent from the atmospheric turbulence. It is important result that the influence of atmospheric turbulence comparison with noncoherent multiple light molecular-aerosol scattering and board satellite device is most significant only for high frequancies and a small scale fragments (Δ<<10)́ of space images and appropriate spectral brightness’s.
Keywords:Scattering Function; Atmospheric Turbulence; Molecular-Aerosol Scattering; On-Board Optical Device; Spatial-Frequency Permission; Linear Optical System; Optical Transfer Function; Fourier Transformation; Structural Turbulence Function; Refraction Index Fluctuation; Atmospheric Spatial-Frequency Filter; Landed Myrra; Threshold Spatial Frequency; Direct and Diffuse Atmospheric Transparency.
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