Abstract
This paper proposes a novel particle filter, namely, the auxiliary iterated extended Kalman particle filter (AIEKPF). To generate the importance density, based on the auxiliary particle filtering (APF) technique the proposed filter uses the iterated extended Kalman filter (IEKF) to integrate the latest measurements into state transition density. This new filter can match the posterior density well, because of the robustness of the APF and the importance density generated by the IEKF. The performance of the presented particle filter is evaluated by two different estimation problems with the noise of Gaussian distribution and Gamma distribution, respectively. The experimental results illustrate that the AIEKPF is superior to the extended Kalman filter and some existing particle filters, such as the standard particle filter (PF), the extended Kalman particle filter, the unscented Kalman particle filter (UKPF) and the auxiliary extended Kalman particle filter, where the number of particles is relatively small, such as 200 and 1,000. However, with an increase of particles, the superiority of the proposed method may decline compared with the PF and APF as showed in the experiments. Also, the AIEKPF has less running time than the UKPF under the same conditions, and from the viewpoint of the average effective sample sizes, it is clear that the AIEKPF has the slightest degeneracy in all filters presented in the experiments.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 71271215, No. 71221061), the International Science & Technology Cooperation Program of China (No. 2011DFA10440), General Program of Hunan Province Education Department (No. 12C0002), and the Collaborative Innovation Center of Resource-conserving & Environment-friendly Society and Ecological Civilization. The authors would like to thank the editors and referees for their valuable comments and suggestions that largely improved the quality of this paper.
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Xi, Y., Peng, H., Kitagawa, G. et al. The auxiliary iterated extended Kalman particle filter. Optim Eng 16, 387–407 (2015). https://doi.org/10.1007/s11081-014-9266-6
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DOI: https://doi.org/10.1007/s11081-014-9266-6