NDLI: Real-time estimation of roll angle for trajectory correction projectile using radial magnetometers

Content Provider	IET Digital Library
Author	Zhao, Hui Su, Zhong
Abstract	An adaptive extend Kalman filter（EKF） is designed to estimate the roll angle for trajectory correction projectile only using radial magnetometers. By analysing the characteristics of the radial magnetometer output signal and the complex angular motion of the high-spin projectiles, the measurement equation is established. Two important measures, namely noise parameter adaptation and increasing system observation, are taken to improve the performance of the designed EKF. The novelty of this study is the proposed adaptive EKF has no requirements on the magnetometer measurement accuracy. That is the magnetometers used need not undergo a complicated calibration process. In addition, orthogonal difference method is introduced to adjust noise parameters. Finally, a series of numerical simulations and flight tests are carried out to verify the performance of the proposed method. The results show the designed adaptive EKF can effectively estimate the roll angle for the trajectory correction projectile and could be extended to practical engineering applications.
Starting Page	1559
Ending Page	1570
Page Count	12
ISSN	17518784
Volume Number	14
e-ISSN	17518792
Issue Number	Issue 10, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/14/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2020.0136
Journal	IET Radar, Sonar & Navigation
Publisher Date	2020-06-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Ballistics And Mechanical Impact (mechanical Engineering) Calibration Complex Angular Motion Designed Adaptive EKF Filtering Method in Signal Processing High-spin Projectiles Kalman Filter Magnetic Variables Measurement Magnetometer Measurement Accuracy Magnetometers Measurement Equation Measurement Standard And Calibration Noise Parameter Adaptation Nonlinear Filter Projectiles Radial Magnetometer Output Signal Roll Angle Sensing Device And Transducers Standards And Calibration Time Estimation Trajectory Correction Projectile
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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