Brief paper: Freeway traffic estimation within particle filtering framework

Mihaylova, Lyudmila and Boel, René and Hegyi, Andreas (2007) Brief paper: Freeway traffic estimation within particle filtering framework. Automatica, 43 (2). pp. 290-300. ISSN 0005-1098

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This paper formulates the problem of real-time estimation of traffic state in freeway networks by means of the particle filtering framework. A particle filter (PF) is developed based on a recently proposed speed-extended cell-transmission model of freeway traffic. The freeway is considered as a network of components representing different freeway stretches called segments. The evolution of the traffic in a segment is modelled as a dynamic stochastic system, influenced by states of neighbour segments. Measurements are received only at boundaries between some segments and averaged within possibly irregular time intervals. This limits the measurement update in the PF to only these time instants when a new measurement arrives, while in between measurement updates any simulation model can be used to describe the evolution of the particles. The PF performance is validated and evaluated using synthetic and real traffic data from a Belgian freeway. An unscented Kalman filter is also presented. A comparison of the PF with the unscented Kalman filter is performed with respect to accuracy and complexity.

Item Type: Journal Article
Journal or Publication Title: Automatica
Additional Information: “The final, definitive version of this article has been published in the Journal, Automatica, 43 (2), 2007, © ELSEVIER.
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qa75
Departments: Faculty of Science and Technology > School of Computing & Communications
ID Code: 820
Deposited By: Dr L Mihaylov
Deposited On: 10 Dec 2007 08:45
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2020 01:40

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