Effect of atmospheric scattering on the spatial resolution of imaging systems
Keywords:
Point spread function;, Optical thickness;, Scattered radiation;, Spatial blur;, Aerosol pattern;, Detector array;, Optical system;Abstract
Introduction Light radiation from a radiation source is not only scattered and absorbed by molecules and aerosols in the atmosphere but also deviates from the original path due to atmospheric turbulence. Among the above phenomena, some factors will cause the intensity of the light source to attenuate, while other factors will cause the spatial blur of the source radiation. The effect of atmospheric turbulence on spatial blur is well known, and many researchers have described its characteristics. Since there is no general conclusion on the problem of light transmission in a scattering and absorbing atmosphere, approximate analytical solutions are used. The small angle approximation, diffuse approximation, and small angle-diffuse approximation are known analytical approximation solutions, each of which has its own scope of application. In addition