Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (3): 30505-030505.doi: 10.1088/1674-1056/22/3/030505

• GENERAL • 上一篇    下一篇

Hybrid three-dimensional variation and particle filtering for nonlinear systems

冷洪泽, 宋君强   

  1. College of Computer, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2012-06-10 修回日期:2012-09-07 出版日期:2013-02-01 发布日期:2013-02-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 41105063).

Hybrid three-dimensional variation and particle filtering for nonlinear systems

Leng Hong-Ze (冷洪泽), Song Jun-Qiang (宋君强)   

  1. College of Computer, National University of Defense Technology, Changsha 410073, China
  • Received:2012-06-10 Revised:2012-09-07 Online:2013-02-01 Published:2013-02-01
  • Contact: Leng Hong-Ze E-mail:hzleng@nudt.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 41105063).

摘要: This work addresses the problem of estimating the states of nonlinear dynamic systems with sparse observations. We present a hybrid three-dimensional variation (3DVar) and particle piltering (PF) method, which combines the advantages of 3DVar and particle-based filters. By minimizing the cost function, this approach will produce a better proposal distribution of the state. Afterwards the stochastic resampling step in standard PF can be avoided through a deterministic scheme. The simulation results show that the performance of the new method is superior to the traditional ensemble Kalman filtering (EnKF) and the standard PF, especially in highly nonlinear systems.

关键词: three-dimensional variation (3DVar), particle piltering (PF), ensemble Kalman filtering (EnKF), chaos system

Abstract: This work addresses the problem of estimating the states of nonlinear dynamic systems with sparse observations. We present a hybrid three-dimensional variation (3DVar) and particle piltering (PF) method, which combines the advantages of 3DVar and particle-based filters. By minimizing the cost function, this approach will produce a better proposal distribution of the state. Afterwards the stochastic resampling step in standard PF can be avoided through a deterministic scheme. The simulation results show that the performance of the new method is superior to the traditional ensemble Kalman filtering (EnKF) and the standard PF, especially in highly nonlinear systems.

Key words: three-dimensional variation (3DVar), particle piltering (PF), ensemble Kalman filtering (EnKF), chaos system

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a
02.60.-x (Numerical approximation and analysis)