In-Flight Self-Alignment Method Aided by Geomagnetism for Moving Basement of Guided Munitions
Joint Authors
Zhang, Shuang-biao
Li, Xing-cheng
Su, Zhong
Source
Journal of Control Science and Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-24
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Electronic engineering
Information Technology and Computer Science
Abstract EN
Due to power-after-launch mode of guided munitions of high rolling speed, initial attitude of munitions cannot be determined accurately, and this makes it difficult for navigation and control system to work effectively and validly.
An in-flight self-alignment method aided by geomagnetism that includes a fast in-flight coarse alignment method and an in-flight alignment model based on Kalman theory is proposed in this paper.
Firstly a fast in-flight coarse alignment method is developed by using gyros, magnetic sensors, and trajectory angles.
Then, an in-flight alignment model is derived by investigation of the measurement errors and attitude errors, which regards attitude errors as state variables and geomagnetic components in navigation frame as observed variables.
Finally, fight data of a spinning projectile is used to verify the performance of the in-flight self-alignment method.
The satisfying results show that (1) the precision of coarse alignment can attain below 5°; (2) the attitude errors by in-flight alignment model converge to 24′ at early of the latter half of the flight; (3) the in-flight alignment model based on Kalman theory has better adaptability, and show satisfying performance.
American Psychological Association (APA)
Zhang, Shuang-biao& Li, Xing-cheng& Su, Zhong. 2015. In-Flight Self-Alignment Method Aided by Geomagnetism for Moving Basement of Guided Munitions. Journal of Control Science and Engineering،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1067774
Modern Language Association (MLA)
Zhang, Shuang-biao…[et al.]. In-Flight Self-Alignment Method Aided by Geomagnetism for Moving Basement of Guided Munitions. Journal of Control Science and Engineering No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1067774
American Medical Association (AMA)
Zhang, Shuang-biao& Li, Xing-cheng& Su, Zhong. In-Flight Self-Alignment Method Aided by Geomagnetism for Moving Basement of Guided Munitions. Journal of Control Science and Engineering. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1067774
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1067774