Abstract

Simulation of infrared radiance fluctuations in the upper atmosphere depends on fluctuations in atmospheric species number densities, vibrational state populations, and the kinetic temperatures along the sensor line-of-sight (LOS). The model developed in this paper predicts the two-dimensional radiance covariance using linearized equations to connect atmospheric temperature fluctuations and LOS radiance fluctuations. The SHARC¹ model is used to calculate mean LOS radiance values and radiance derivatives which are necessary to determine the radiance statistics. The radiance statistics are non-stationary and are explicitly bandpass and sensor FOV dependent.

© 1995 Optical Society of America