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  • SPACECRAFT INSTRUMENTATION  (1)
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    Laboratory test results of the high speed optical tracking system for the Spaceborne Geodynamic Ranging System (1987)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: The high speed, high resolution optical tracking system for the Spaceborne Geodynamic Ranging System employs a two-axis gimbaled pointing device that can operate from a Space Shuttle platform and can track multiple retroreflector ground targets with arcsec accuracy. Laboratory tests of the stepping characteristics of the pointing system for various step sizes and directions has shown arcsec repeatability with little wasted motion, overshoot, or ringing. The worst rms tracking jitter was 1 and 2 arcsec in the roll and pitch axes, respectively, at the maximum tracking rate of 2 deg/sec.
    Keywords: SPACECRAFT INSTRUMENTATION
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