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Chin. Phys. B, 2012, Vol. 21(6): 068901    DOI: 10.1088/1674-1056/21/6/068901
GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS Prev   Next  

A genetic resampling particle filter for freeway traffic-state estimation

Bi Jun(毕军), Guan Wei(关伟), and Qi Long-Tao(齐龙涛)
Key Laboratory for Urban Transportation Complex Systems Theory and Technologyof the Ministry of Education, Beijing Jiaotong University, Beijing 100044, China
Abstract  On-line estimation of the state of traffic based on data sampled by electronic detectors is important for intelligent traffic management and control. Because a nonlinear feature exists in the traffic state, and because particle filters have good characteristics when it comes to solving the nonlinear problem, a genetic resampling particle filter is proposed to estimate the state of freeway traffic. In this paper, a freeway section of the northern third ring road in the city of Beijing in China is considered as the experimental object. By analysing the traffic-state characteristics of the freeway, the traffic is modeled based on the second-order validated macroscopic traffic flow model. In order to solve the particle degeneration issue in the performance of the particle filter, a genetic mechanism is introduced into the resampling process. The realization of a genetic particle filter for freeway traffic-state estimation is discussed in detail, and the filter estimation performance is validated and evaluated by the achieved experimental data.
Keywords:  particle filter      genetic mechanism      traffic-state estimation      traffic flow model  
Received:  19 October 2011      Revised:  06 December 2011      Accepted manuscript online: 
PACS:  89.40.Bb (Land transportation)  
  45.70.Vn (Granular models of complex systems; traffic flow)  
  07.05.Mh (Neural networks, fuzzy logic, artificial intelligence)  
Fund: Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA110303).
Corresponding Authors:  Bi Jun     E-mail:  bilinghc@163.com

Cite this article: 

Bi Jun(毕军), Guan Wei(关伟), and Qi Long-Tao(齐龙涛) A genetic resampling particle filter for freeway traffic-state estimation 2012 Chin. Phys. B 21 068901

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