Accession Number : AD0851576

Title :   Propagation of Essentially Monochromatic Illumination for Reconnaissance Applications.

Corporate Author : OHIO STATE UNIV COLUMBUS ELECTROSCIENCE LAB

Report Date : 24 APR 1969

Pagination or Media Count : 37

Abstract : Signal losses of a laser system in the presence of atmospheric absorption and scattering are examined. The extinction coefficient of atmospheric water vapor and carbon dioxide is treated with respect to the CO2 laser and experimental verification given. Aerosol extinction and back scattering is analyzed at several wavelengths between 0.34 and 10.6 microns and the results of these calculations given in a manner suitable for determining the expected effect of atmospheric aerosol scattering and loss over various slant paths. Experimental verification for the extinction coefficient is given for aerosol, fog, and precipitation at 0.6328 and 10.6 microns, and for backscattering at 0.6328 microns. (Author)

Descriptors :   *AERIAL RECONNAISSANCE, *GAS LASERS, ILLUMINATION, ATTENUATION, MONOCHROMATIC LIGHT, LIGHT TRANSMISSION, ATMOSPHERES, ABSORPTION, CARBON DIOXIDE, WATER VAPOR, AEROSOLS, SCATTERING, INFRARED RADIATION.

Subject Categories : Lasers and Masers
      Military Operations, Strategy and Tactics

Distribution Statement : APPROVED FOR PUBLIC RELEASE