Accession Number : AD0281910

Title :   PARAMETERS PERTINENT TO THE DETECTION OF ULTRAVIOLET RADIATION IN SPACE-TO-SPACE CONFIGURATIONS,

Corporate Author : TRW SPACE TECHNOLOGY LABS LOS ANGELES CALIF

Personal Author(s) : Glatt,Leonard

Report Date : JUN 1962

Pagination or Media Count : 86

Abstract : The ultraviolet spectral region below 2800 Angstroms might prove advantageous for passive space-to-space surveillance, and for the active transmission of secure messages between friendly spacecraft. This follows since terrain based countermeasures would be frustrated by the opacity of the atmosphere and because the background noise would be at a minimum. The success of either of these applications would be dependent upon the reception of signals suitably above the noise level set by the combination of background and system noises. The physical origins of possible target signals and of background noise are discussed and related to more basic parameters. Some estimates are given for the expected magnitudes of these quantities under the assumptions of various realistic configurations. Signal-to-noise relations are presented. (Author)

Descriptors :   *SPACE ENVIRONMENTS, *ULTRAVIOLET COMMUNICATIONS, *ULTRAVIOLET DETECTORS, *ULTRAVIOLET RADIATION, *ULTRAVIOLET RESEARCH, DETECTION, EXTRATERRESTRIAL RADIO WAVES, INTERFERENCE, SCATTERING, SIGNAL-TO-NOISE RATIC, SPACEBORNE

Distribution Statement : APPROVED FOR PUBLIC RELEASE