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  • Chemistry  (1)
  • SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Ueber das sogenannte graphitförmige Bor. (1867)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 141 (1867), S. 268-270 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.18671410217
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    On-board image compression for the RAE lunar mission (1976)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The requirements, design, implementation, and flight performance of an on-board image compression system for the lunar orbiting Radio Astronomy Explorer-2 (RAE-2) spacecraft are described. The image to be compressed is a panoramic camera view of the long radio astronomy antenna booms used for gravity-gradient stabilization of the spacecraft. A compression ratio of 32 to 1 is obtained by a combination of scan line skipping and adaptive run-length coding. The compressed imagery data are convolutionally encoded for error protection. This image compression system occupies about 1000 cu cm and consumes 0.4 W.
    Keywords: SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING
    Type: IEEE Transactions on Aerospace and Electronic Systems; AES-12; May 1976
    Format: text
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    NASA TECHNICAL REPORTS
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