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2009 WRI World Congress on Computer Science and Information Engineering
The Algorithm of Track Occupied Identification Base on HMM
Los Angeles, California USA
March 31-April 02
ISBN: 978-0-7695-3507-4
Precise location of a train on the rail network is important to train control system. The general problem of locating a train on closely-spaced parallel tracks is hard to determine the track occupied by train simply relying on GNSS. Hidden Markov Model (HMM) is widely used in speech processing of a time series model. This paper applied the HMM to the track occupied automatic identification, established the HMM of tracks, resolved the problem of track occupied identification using GNSS, and progressive studied the impact on identification, when changing the state number of the HMM, GNSS output frequency and train speed, then the optimal parameters are determined.
Index Terms:
HMM, GNSS, track occupied identification, railway
Citation:
Wang Jian, Shangguan Wei, Cai Bo-gen, Chen De-wang, "The Algorithm of Track Occupied Identification Base on HMM," csie, vol. 5, pp.493-497, 2009 WRI World Congress on Computer Science and Information Engineering, 2009
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