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Journal of Projectiles, Rockets, Missiles and Guidance >

2012 , Vol. 32 >Issue 6: 17 - 20,24

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2012.06.027

MISSILES AND GUIDANCE TECHNOLOGY

On-line FINS Error Estimation Based on UKF

  • WANG Xinguo ,
  • LI Aihua ,
  • LIU Jieyu ,
  • SHAN Bin
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  • The Second Artillery Engineering University, Xi'an 710025, China

Received date: 2012-03-22

  Online published: 2025-05-29

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Abstract

In order to on-line estimate the constant zero bias, scale factor and fixing errors of fiber optic gyro strapdown inertial navigation system (FSINS) applied in missiles and correcting navigation parameters measured by FSINS, a FSINS error separation algorithm based on rotating missile body was designed, and the state equations and observation equations were deduced based on unscented Kalman filter (UKF). The simulation was made to check the UKF in different dynamic error, and the result shows the method can estimate the gyros' zero bias, scale factor errors and fixing error effectively and shows the relation between estimation precision and CNS attitude determined precision.

Key words： CNS guidance; FSINS; error separation

Cite this article

WANG Xinguo , LI Aihua , LIU Jieyu , SHAN Bin . On-line FINS Error Estimation Based on UKF[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2012 , 32(6) : 17 -20,24 . DOI: 10.15892/j.cnki.djzdxb.2012.06.027

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