Calculating the modulation transfer function of atmospheric turbulence

Computer Science – Performance

Scientific paper

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Atmospheric Correction, Atmospheric Turbulence, Image Processing, Modulation Transfer Function, Aerial Photography, Aerial Reconnaissance, Blurring, Far Fields, Near Fields, Refractivity

Scientific paper

A comprehensive model for calculating the degrading effects of atmospheric turbulence on the performance of long-range, airborne imaging systems is described. The model output is the MTF of the turbulent air in the conical ray bundle from the target to the sensor. Published data from the field of astronomy and other theoretical developments are incorporated into the formulation. It was found that the index of refraction turbulence structure coefficient C(n)-squared altitude profile has about the same value and appearance over most of the world; therefore, the C(n)-squared altitude profile is integrated and a plot of the results (parameter C sub h) is included.

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