Upper Atmosphere IR Radiation Modeling and Analysis
Abstract
Our objective is the study of the mechanisms involved in the emissions of the infrared (IR) radiation of the upper atmosphere and the related impacts of this background clutter on surveillance sensors. During this time frame, we concentrated our efforts on the investigation of the models for non- equilibrium phenomena leading to emission from very high rotational levels. One critical parameter in the model is the scattering cross section in a complex multi-body collision and interaction. In this investigation, the impulse approach (IA) is being applied to atom-molecule collisions which accounts for the total scattering amplitude of an atom incident upon a complex system by summation of independent two particle interactions. A resultant momentum distribution of each constituent particle is then evaluated. Studies to date by various investigators uses simplifications, the peaking approximation (PA), to evaluate the complex integral for the momentum of non-interaction (spectator) particles. Our work investigated the validity and accuracy of the PA.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 14, 1990
- Accession Number
- ADA227214
Entities
People
- B. K. Yap
- J. M. Sindoni
- R. J. Healey