Functional Iteration in-Flight Alignment Method for Projectiles MSINS

In-flight alignment is the basis for projectile microstrap-down inertial navigation system (MSINS) to accurate navigation. Due to high dynamic and small space constraints of projectiles, MSINS with antihigh overload and low-precision is usually used, which makes it difficult to achieve initial align...

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Bibliographic Details
Published in:IEEE/ASME transactions on mechatronics Vol. 27; no. 5; pp. 2887 - 2896
Main Authors: Wang, Jinwen, Deng, Zhihong, Liang, Xinyu, Miao, Zhihao
Format: Journal Article
Language:English
Published: New York IEEE 01.10.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Alignment
Differential equations
Earth
Functional iteration
Global navigation satellite system
guided projectiles
high dynamic
in-flight alignment
Inertial navigation
Iterative methods
Legendre polynomials
Mathematical models
Mechatronics
microstrap-down inertial navigation system (MSINS)
Navigation systems
Optimization
Polynomials
Position measurement
Projectiles
ISSN:1083-4435, 1941-014X
Online Access:Get full text
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Summary:In-flight alignment is the basis for projectile microstrap-down inertial navigation system (MSINS) to accurate navigation. Due to high dynamic and small space constraints of projectiles, MSINS with antihigh overload and low-precision is usually used, which makes it difficult to achieve initial alignment in flight. Hence, this article proposes a global navigation satellite system (GNSS) aided MSINS in-flight alignment method based on functional iteration. The Legendre polynomials integral recursive model is derived and functional iteration alignment scheme is constructed. The simulation results show that the alignment precision of the proposed method is improved by more than 18% compared with the traditional optimization-based alignment optimization-based alignment (OBA) method. The experiment results show that the alignment precision of the proposed method is improved by more than 10% compared with the traditional OBA method.
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ISSN:1083-4435
1941-014X
DOI:10.1109/TMECH.2021.3123951