A rank correlation coefficient based particle filter to estimate parameters in non-linear models. (April 2019)

• Record Type: Journal Article
• Authors: Meng, Qingxu; Li, Kaicheng
• Is Part Of: International journal of distributed sensor networks. Volume 15:Number 4(2019)
• Publication Date: 2019-04
• Subjects: Particle filtering -- parameter estimation -- correlation coefficient -- order statistics correlation coefficient -- harmonic model; Sensor networks -- Periodicals; Intelligent agents (Computer software) -- Periodicals; Multisensor data fusion -- Periodicals; 681.2
• DOI: 10.1177/1550147719841273
• Languages: English
• ISSNs: 1550-1329

Abstract

Particle filtering algorithm has found an increasingly wide utilization in many fields at present, especially in non-linear and non-Gaussian situations. Because of the particle degeneracy limitation, various resampling methods have been researched. The estimation process of particle filtering algorithm is a series of weighted calculation processes, which can be regarded as weighted data fusion. This article proposed an improved particle filtering algorithm combining with different rank correlation coefficients to overcome the shortcomings of degeneracy. By simulating iteration operation in MATLAB, it discovers that the proposed algorithm provides better accuracy in comparison with particle filtering, Gaussian sum particle filter, and Gaussian mixture sigma-point particle filter in Gaussian mixture noise. A practical seven-dimensional harmonic model is also implemented in the simulation. After comparing the performances of different algorithms, we found that the proposed method had more accuracy than the widely used extended Kalman filtering algorithm.