D. Sadot et al., PREDICTION OF OVERALL ATMOSPHERIC MODULATION TRANSFER-FUNCTION WITH STANDARD WEATHER PARAMETERS - COMPARISON WITH MEASUREMENTS WITH 2 IMAGING-SYSTEMS, Optical engineering, 34(11), 1995, pp. 3239-3248
The overall atmospheric modulation transfer function (MTF) is essentia
lly the product of the turbulence and aerosol MTFs. Models describing
meteorological dependences of both C-n(2) where (C-n is the refractive
index structure coefficient) and the coarse aerosol size distribution
have been developed previously. Here, they are used to predict the tu
rbulence MTF, aerosol MTF, and overall atmospheric MTF according to th
e weather, Comparison of predictions with measurements yields very low
mean squared normalized error and suggests that such prediction model
s can also be very useful in image restoration based on weather data a
t the time and general location in which the image was recorded. An in
teresting aspect of this work is that measurements of the aerosol MTF
with different imaging instrumentation are very different, as expected
from theory developed previously concerning the practical aerosol MTF
actually recorded in the image. This is dependent on instrumentation
parameters. This experimental verification with two different imaging
systems supports the model that the ''practical'' aerosol MTF is very
dependent on instrumentation.