Enhancement of Point Source Thermal Radiation under Clouds in a Nonattenuating Medium.
Abstract
A detailed series of graphs is provided along with accompanying analyses to show cloud overcast effects upon the visible radiation emanating from a point source to a target at the ground. The appendixed graphs apply to the following set of hypothetical conditions: The medium of propagation is a nonattenuating (no scattering or absorbing) atmosphere, The overlying cloud acts as a 100% diffusely reflecting surface, The ground surface is nonrelecting and The target acts as a Lambert-type receiver. Total atmospheric radiation transmission maxima are about 300% of the direct transmission in a nonattenuating atmosphere. This occurs, for example, when a high-altitude source is close to an overcast with the target parallel to the ground and clouds and its horizontal distance is close to ground zero.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1975
- Accession Number
- ADA019269
Entities
People
- Israel Cantor
Organizations
- United States Army Communications-Electronics Command