NDLI: Attitude dynamics aiding for line-of-sight angular rate reconstruction of strap-down seeker

Content Provider	IEEE Xplore Digital Library
Author	Zhao Bin Zhou Jun
Copyright Year	2015
Description	Author affiliation: Inst. of Precision Guidance & Control, Northwestern Polytech. Univ., Xi'an, China (Zhao Bin; Zhou Jun)
Abstract	To solve the problem that the line-of-sight (LOS) angular rate extraction accuracy of strap-down seeker is usually affect by the measurement accuracy of attitude angular rate and the accuracy of attitude angle calculation, a new LOS angular rate filtering method aided by the attitude control rudder angle was proposed. First, the filtering equation of MEMS inertial measurement unit (IMU) was established based on the attitude dynamics; second, the Unscented Kalman Filter (UKF) was employed to estimate the three axis angular rate, three axis attitude angle, attack angle and the slip angle; third, the Euler transformation matrices of LOS angle in inertial reference system were derived, based on which the tracking differentiator was employed to realize the filtering of LOS angle and estimation of LOS angular rate. The simulation result implies that the estimation error of angular rate and attitude angle is reduced respectively to 60% and 50%, while the error of LOS angle and LOS angular rate is 0.6° and 0.06°/s respectively, and the estimation error of attack angle and slip angle is about 0.6°, which proves the validity of the method.
Starting Page	5079
Ending Page	5083
File Size	324449
Page Count	5
File Format	PDF
ISBN	9789881563897
ISSN	19341768
DOI	10.1109/ChiCC.2015.7260431
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-28
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Technical Committee on Control Theory, Chinese Association of Automation
Subject Keyword	MEMS Component Rudder Angle Strap-down Seeker Dynamics Aiding
Content Type	Text
Resource Type	Article

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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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