Accession Number : AD0438723


Title :   RESEARCH ON THE DETECTION OF INFRARED EMISSION FROM SATELLITE VEHICLES.


Descriptive Note : Final rept.,


Corporate Author : ITT FEDERAL LABS SAN FERNANDO CALIF


Personal Author(s) : Hall,F F ,Jr


Report Date : Feb 1964


Pagination or Media Count : 18


Abstract : Satellite irradiance measurements were influenced by the variable atmospheric background radiance, especially during twilight hours. Measurements of the 0.7-3.0 micron radiance of the atmosphere during twilight have been made as a function of time and zenith angle. This enables the calculation of scattering diagrams for aerosols in the upper atmosphere. Particles near the tropopause are found to scatter predominantly in the forward direction, typical of dielectric spheres. Particles near 32 kilometers are found to scatter in the backward direction, as do conductive spheres. It is shown that the data interpretation is not influenced by nonconservative scattering which may be expected due to water absorption bands in the aerosols in the near infrared. (Author)


Descriptors :   *INFRARED TRACKING , ARTIFICIAL SATELLITES , RADIOMETERS , INFRARED DETECTORS , BACKGROUND , TWILIGHT , SCATTERING , AEROSOLS , UPPER ATMOSPHERE , INFRARED RADIATION , REFRACTION


Distribution Statement : APPROVED FOR PUBLIC RELEASE