Meteor shower detection with density‐based clustering

We present a new method to detect meteor showers using the density‐based spatial clustering of applications with noise algorithm (DBSCAN; Ester et al. ). The DBSCAN algorithm is a modern cluster detection algorithm that is well suited to the problem of extracting meteor showers from all‐sky camera d...

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Bibliographic Details
Published in:Meteoritics & planetary science 2017-06, Vol.52 (6), p.1048-1059
Main Authors: Sugar, Glenn, Moorhead, Althea, Brown, Peter, Cooke, William
Format: Article
Language:English
Subjects:
Algorithms
Clustering
Clusters
Datasets
Density
Ecliptic
Economic models
Longitude
Meteor showers
Meteor trajectories
Meteoroid showers
Meteors
Noise
Noise prediction
Shape recognition
Solar longitude
Spatial analysis
Sun
Trajectories
Velocity
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Summary:We present a new method to detect meteor showers using the density‐based spatial clustering of applications with noise algorithm (DBSCAN; Ester et al. ). The DBSCAN algorithm is a modern cluster detection algorithm that is well suited to the problem of extracting meteor showers from all‐sky camera data because of its ability to efficiently extract clusters of different shapes and sizes from large data sets. We apply this shower detection algorithm on a data set that contains 25,885 meteor trajectories and orbits obtained from the NASA All‐Sky Fireball Network and the Southern Ontario Meteor Network (SOMN). Using a distance metric based on solar longitude, geocentric velocity, and Sun‐centered ecliptic radiant, we find 25 strong cluster detections and six weak detections in the data, all of which are good matches to known showers. We include measurement errors in our analysis to quantify the reliability of cluster occurrence and the probability that each meteor belongs to a given cluster. We validate our method through false‐positive/negative analysis and with a comparison to an established shower detection algorithm.
ISSN:1086-9379
1945-5100
DOI:10.1111/maps.12856