Analyzing meteoroid flights using particle filters
MetadataShow full item record
© 2017. The American Astronomical Society. Reproduced with permission.
Fireball observations from camera networks provide position and time information along the trajectory of a meteoroid that is transiting our atmosphere. The complete dynamical state of the meteoroid at each measured time can be estimated using Bayesian filtering techniques. A particle filter is a novel approach to modeling the uncertainty in meteoroid trajectories and incorporates errors in initial parameters, the dynamical model used, and observed position measurements. Unlike other stochastic approaches, a particle filter does not require predefined values for initial conditions or unobservable trajectory parameters. The Bunburra Rockhole fireball, observed by the Australian Desert Fireball Network (DFN) in 2007, is used to determine the effectiveness of a particle filter for use in fireball trajectory modeling. The final mass is determined to be 2.16 ± 1.33 kg with a final velocity of 6030 ± 216 ms-1, similar to previously calculated values. The full automatability of this approach will allow an unbiased evaluation of all events observed by the DFN and lead to a better understanding of the dynamical state and size frequency distribution of asteroid and cometary debris in the inner solar system. © 2017. The American Astronomical Society. All rights reserved.
Showing items related by title, author, creator and subject.
Sansom, E.; Jansen-Sturgeon, T.; Rutten, M.; Devillepoix, Hadrien; Bland, Phil; Howie, Robert; Cox, M.; Towner, Martin; Cupák, M.; Hartig, Ben (2019)Meteoroid modelling of fireball data typically uses a one dimensional model along a straight line triangulated trajectory. The assumption of a straight line trajectory has been considered an acceptable simplification for ...
Sansom, E.; Bland, P.; Paxman, Jonathan; Towner, M. (2015)Estimating the mass of a meteoroid passing through the Earth's atmosphere is essential to determining potential meteorite fall positions. High-resolution fireball images from dedicated camera networks provide the position ...
Characterising fireballs for mass determination: Steps toward automating the Australian desert fireball networkSansom, E.; Bland, Phil; Paxman, J.; Towner, Martin (2014)Determining the mass of a meteoroid passing through the Earth's atmosphere is essential to determining potential meteorite fall positions. This is only possible if the characteristics of these meteoroids, such as density ...