کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1765004 1020080 2012 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bayesian linking of geosynchronous orbital debris tracks as seen by the Large Synoptic Survey Telescope
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Bayesian linking of geosynchronous orbital debris tracks as seen by the Large Synoptic Survey Telescope
چکیده انگلیسی

We describe a Bayesian sampling model for linking and constraining orbit models from angular observations of “streaks” in optical telescope images. Our algorithm is particularly suited to situations where the observation times are small fractions of the orbital periods of the observed objects or when there is significant confusion of objects in the observation field. We use Markov Chain Monte Carlo to sample from the joint posterior distribution of the parameters of multiple orbit models (up to the number of observed tracks) and parameters describing which tracks are linked with which orbit models. Using this algorithm, we forecast the constraints on geosynchronous (GEO) debris orbits achievable with the planned Large Synoptic Survey Telescope (LSST). Because of the short 15 s exposure times, preliminary orbit determinations of GEO objects from LSST will have large and degenerate errors on the orbital elements. Combined with the expected crowded fields of GEO debris it will be challenging to reliably link orbital tracks in LSST observations given the currently planned observing cadence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 49, Issue 4, 15 February 2012, Pages 655–666
نویسندگان
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