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IEICE TRANSACTIONS on Fundamentals

Closed-Form Approximations for Gaussian Sum Smoother with Nonlinear Model

Haiming DU, Jinfeng CHEN, Huadong WANG

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Summary :

Research into closed-form Gaussian sum smoother has provided an attractive approach for tracking in clutter, joint detection and tracking (in clutter), and multiple target tracking (in clutter) via the probability hypothesis density (PHD). However, Gaussian sum smoother with nonlinear target model has particular nonlinear expressions in the backward smoothed density that are different from the other filters and smoothers. In order to extend the closed-form solution of linear Gaussian sum smoother to nonlinear model, two closed-form approximations for nonlinear Gaussian sum smoother are proposed, which use Gaussian particle approximation and unscented transformation approximation, separately. Since the estimated target number of PHD smoother is not stable, a heuristic approximation method is added. At last, the Bernoulli smoother and PHD smoother are simulated using Gaussian particle approximation and unscented transformation approximation, and simulation results show that the two proposed algorithms can obtain smoothed tracks with nonlinear models, and have better performance than filter.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.3 pp.691-701
Publication Date
2016/03/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E99.A.691
Type of Manuscript
PAPER
Category
Digital Signal Processing

Authors

Haiming DU
  Zhengzhou University of Light Industry
Jinfeng CHEN
  Cleveland State University
Huadong WANG
  Chongqing University of Posts and Telecommunications

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