Spatial-frequency- and wavelength-dependent effects of aerosols on the atmospheric modulation transfer function.
Abstract
Spatial-coherence degradation through forward scattering is demonstrated by experiments carried out over diagonal lines of sight through the entire atmosphere. The image-quality degradation is described by an aerosol modulation transfer function (MTF) that strongly affects the wavelength dependence of imaging through the atmosphere. Changes in weather that result in changes in the average size of airborne soil particles also strongly change the wavelength dependence of resolution through the atmosphere as a result of changes in the wavelength dependence of the scattering coefficient. In addition, significant effects of the aerosol MTF are shown to be easily evident in any location in which dust or sand particles are not strongly attached to the ground.
- Publication:
-
Journal of the Optical Society of America (1917-1983)
- Pub Date:
- 1982
- Bibcode:
- 1982JOSA...72.1092K
- Keywords:
-
- Aerosols;
- Atmospheric Attenuation;
- Atmospheric Scattering;
- Forward Scattering;
- Modulation Transfer Function;
- Spatial Dependencies;
- Frequency Response;
- Image Contrast;
- Scattering Coefficients;
- Scattering Cross Sections;
- Geophysics;
- Aerosols:Earth Atmosphere;
- Earth Atmosphere:Turbulence