{"id":12528,"date":"2017-05-16T17:06:21","date_gmt":"2017-05-16T15:06:21","guid":{"rendered":"http:\/\/karmaka.de\/?p=12528"},"modified":"2017-05-16T17:06:21","modified_gmt":"2017-05-16T15:06:21","slug":"submillisecond-fireball-timing-using-de-bruijn-timecodes","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=12528","title":{"rendered":"Submillisecond fireball timing using de Bruijn timecodes."},"content":{"rendered":"<p>Howie, R. M., Paxman, J., Bland, P. A., Towner, M. C., Sansom, E. K. and Devillepoix, H. A. R.<\/p>\n<p>Meteoritics &#038; Planetary Science<br \/>\n10.1111\/maps.12878<br \/>\nAvailable online 16 May 2017<\/p>\n<p><a href=\"http:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.12878\/abstract\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>&#8220;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\u2014a de Bruijn sequence\u2014and 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.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Howie, R. M., Paxman, J., Bland, P. A., Towner, M. C., Sansom, E. K. and Devillepoix, H. A. R. Meteoritics &#038; Planetary Science 10.1111\/maps.12878 Available online 16 May 2017 LINK &#8220;Long-exposure fireball photographs have been&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,97],"tags":[118,3867,1181,98,3866,141],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/12528"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12528"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/12528\/revisions"}],"predecessor-version":[{"id":12529,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/12528\/revisions\/12529"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12528"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12528"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}