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    Submillisecond fireball timing using de Bruijn timecodes

    Access Status
    Fulltext not available
    Authors
    Howie, R.
    Paxman, J.
    Bland, Phil
    Towner, Martin
    Sansom, E.
    Devillepoix, H.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Howie, R. and Paxman, J. and Bland, P. and Towner, M. and Sansom, E. and Devillepoix, H. 2017. Submillisecond fireball timing using de Bruijn timecodes. Meteoritics and Planetary Science. 52 (8): pp. 1669-1685.
    Source Title
    Meteoritics and Planetary Science
    DOI
    10.1111/maps.12878
    ISSN
    1086-9379
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/53356
    Collection
    • Curtin Research Publications
    Abstract

    Long-exposure fireball photographs have been used to systematically record meteoroid trajectories, calculate heliocentric orbits, and determine meteorite fall positions since the mid-20th century. Periodic shuttering is used to determine meteoroid velocity, but up until this point, a separate method of precisely determining the arrival time of a meteoroid was required. We show it is possible to encode precise arrival times directly into the meteor image by driving the periodic shutter according to a particular pattern-a de Bruijn sequence-and eliminate the need for a separate subsystem to record absolute fireball timing. The Desert Fireball Network has implemented this approach using a microcontroller driven electro-optic shutter synchronized with GNSS UTC time to create small, simple, and cost-effective high-precision fireball observatories with submillisecond timing accuracy.

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