On-board image compression for the RAE lunar mission

Details On-board image compression for the RAE lunar mission On-board image compression for the RAE lunar mission

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976itaes..12..327m&link_type=abstract

IEEE Transactions on Aerospace and Electronic Systems, vol. AES-12, May 1976, p. 327-335.

Astronomy and Astrophysics

Astronomy

Data Compression, Explorer 49 Satellite, Lunar Spacecraft, Onboard Equipment, Panoramic Cameras, Spaceborne Photography, Error Correcting Codes, Gravity Gradient Satellites, Imaging Techniques, Radio Antennas, Radio Astronomy, Spacecraft Antennas, Systems Engineering

Scientific paper

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.

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