A Model for Predicting the Spectral Irradiance on a Ground Target from the Sun and the Clear Daytime Sky
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
A single-scattering atmospheric radiative transfer model is derived and described. This model, based only on ground level measurements, can be used to predict the spectral and directional characteristics of radiation incident on a ground target from the sun and the cloudless daytime in the absence of discontinuities such as inversion layers. Wavelengths from 0.4 to 1.7 microns are considered. The model makes use of available information on the scattering and absorbing properties of atmospheric constituents and the distribution of these constituents with altitude. The final result is in the form of a function that can be integrated by computer to determine the spectral irradiance on the target from a preselected segment of the clear daytime sky. Detailed discussions of error sources and model limitations are included.
- Atmospheric Physics
- Optical Detection and Detectors
- Infrared Detection and Detectors