Research on Non-Gyro Projectile’s Attitude Measurement Based on Improved Unscented Kalman Filter

Zhao Hua Liu; Jia Bin Chen; Yong Wang; Chun Lei Song; Jun Wang; Wei Feng

doi:10.4028/www.scientific.net/KEM.480-481.1111

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 480-481Research on Non-Gyro Projectile’s Attitude...

Research on Non-Gyro Projectile’s Attitude Measurement Based on Improved Unscented Kalman Filter

Abstract:

Considering the control requirements of guided projectile, a novel method is studied that using three low-cost MEMS accelerometers as inertial measurement unit to construct state equation and measurement equation of system, using improved unscented Kalman filter (IUKF) to estimate the state of system. For the system characteristic of linear state equation and nonlinear measurement equation, the improved UKF nonlinear filter algorithm which combines KF and UKF was proposed. At the same time, utilizing minimal skew simplex sampling to reduce the number of sigma points, computational efficiency is enhanced. The simulation experimental results show that using IUKF algorithm can obtains good precision of estimation.

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Key Engineering Materials (Volumes 480-481)

Pages:

1111-1116

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.480-481.1111

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Online since:

June 2011

Authors:

Zhao Hua Liu, Jia Bin Chen, Yong Wang, Chun Lei Song, Jun Wang, Wei Feng

Keywords:

Attitude Measurement, Non-Gyro, Nonlinear, Reduced Sigma Point, Unscented Kalman Filter (UKF)

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References

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