ATMOSPHERIC INFLUENCE ON IMAGE QUALITY OF AIRBORNE PHOTOGRAPHS

The image quality of airborne photographs is influenced by the atmosph ere. Several factors affect the atmosphere, such as temperature, press ure, humidity, and wind speed. Furthermore, these atmospheric influenc es are dependent on the flight altitude. The MTF of the atmospheric in fluences and its dependence on the altitude are examined theoretically and experimentally. Several airborne photographs taken at different a ltitudes have been evaluated with edge gradient analysis as well as wi th a grating pattern method. Results are shown, discussed, and compare d with model calculations.