Computer Science – Sound
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jhatd..10...56c&link_type=abstract
Johns Hopkins APL Technical Digest (ISSN 0270-5214), vol. 10, Jan.-Mar. 1989, p. 56-65.
Computer Science
Sound
Atmospheric Sounding, Background Radiation, Earth Orbital Environments, Satellite Sounding, Ultraviolet Spectra, Visible Spectrum, Earth Limb, Infrared Radiation, Lunar Radiation, Nitric Oxide, Stellar Radiation
Scientific paper
From the vantage of low earth orbit, modern electro-optical instruments can observe characteristic atmospheric features. A recent Department of Defense mission scanned the earth limb under fully sunlit, partially moonlit, and near-terminator conditions and measured atmospheric emissions in the 130- to 725-nm spectral regime. Spectrographic and imaging instruments identified atmospheric emissions from species such as atomic oxygen, nitric oxide, and sodium; pitching maneuvers of the spacecraft platform allowed the altitudinal profiles of these emissions to be determined. Additionally, the instruments observed the moon and several stars. The measurements calibrated the instruments' responses to distinct points and edges and revealed the smearing of three to five pixels in the definition of an edge.
Carbary James F.
Fort Dennis E.
Fountain Glen H.
Hansen John S.
Meng Ching I.
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