Model Fitting Filter

Xiaoxu Wang, Jun Zhang, Chaofeng Li, Quan Pan, Zhengtao Ding, Xin Yin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we present a new nonlinear filter based on variational inference, which we have named the model fitting filter (MFF). The core of MFF is to represent or fit the nonlinear measurement likelihood probability with a linear Gaussian probability (LGP) characterized by some parameters that need to be turned. Further, MFF is analytically established on LGP, which is a little similar to the simple linear system filter. Specifically, the nonlinear filtering performance is well improved by utilizing these turned parameters to correct the state estimation. At the same time, MFF does not require the square root decomposition of covariance matrix, so it avoids the inborn defect of numerical instability, which exists more or less in UKF or DDF. The superior performance of MFF is numerically tested by a target tracking problem with nonlinear models.

Original languageEnglish
Title of host publication2018 Annual American Control Conference, ACC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5479-5484
Number of pages6
ISBN (Print)9781538654286
DOIs
StatePublished - 9 Aug 2018
Event2018 Annual American Control Conference, ACC 2018 - Milwauke, United States
Duration: 27 Jun 201829 Jun 2018

Publication series

NameProceedings of the American Control Conference
Volume2018-June
ISSN (Print)0743-1619

Conference

Conference2018 Annual American Control Conference, ACC 2018
Country/TerritoryUnited States
CityMilwauke
Period27/06/1829/06/18

Keywords

  • model fitting filter
  • Nonlinear estimation
  • numerical instability
  • variational inference

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