Correcting Algorithms of the Spinning Projectile Attitude Based on the Background Magnetic Field Compensation

Ke Yu QI; Chao Xiang; Xiong Zhu Bu; Jun Yu Shao

doi:10.4028/www.scientific.net/AMM.602-605.2509

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 602-605Correcting Algorithms of the Spinning Projectile...

Correcting Algorithms of the Spinning Projectile Attitude Based on the Background Magnetic Field Compensation

Abstract:

At present, traditional navigation method could not provide long-time stability attitude information for the high spinning projectile because of drift errors of micro-inertial sensors. Meanwhile, the projectile attitude measuring method with respect to the earth's magnetic field is still auxiliary. The principle of characteristic ratio algorithm and compensation model of the background magnetic field for the spinning projectile are been introduced. To realize the high accuracy attitude measuring of the projectile, a new correcting method is proposed. The detail correcting steps are derived with the linear interpolation theory and iterative algorithm. On this basis, numerical simulation is conducted combining with projectile's flight rules. The results show that the corrected attitude angles errors are within, and attitude update rate increased obviously. The calculating results could better describe the whole real roll motion. The proposed correcting method is significantly effective.

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Periodical:

Applied Mechanics and Materials (Volumes 602-605)

Pages:

2509-2512

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.602-605.2509

Citation:

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Online since:

August 2014

Authors:

Ke Yu QI*, Chao Xiang, Xiong Zhu Bu, Jun Yu Shao

Keywords:

Attitude Correction, Background Magnetic Field Compensation, Simulation Analysis, Spinning Projectile

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* - Corresponding Author

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