Circuit Design and System Error Analysis Based on MR / GPS Combination Measuring Projectile Roll Angle

Abstract:

In the control process of trajectory correction projectile, a real-time accurate measurement of projectile roll angle information is required. Geomagnetic and GPS measurement principle is applied for the establishment of the projectile measured roll angle combinations mathematical calculation model, the designing of MR and GPS measuring circuits, and derivation of the singular points of the system and error resolution type. Numerical simulation methods are applied to verify the location of singular points of the combination of measurements and the linear spline combination of interpolation method of compensation the position of the magnetic vector error and the ellipsoid fitting calibration algorithm compensate for magnetic measurement error. The geomagnetic error has less effects on the combination of measured roll angle error, while the pitch angle and yaw angle error has greater impact on the roll angle error. Remove the singular point area, projectile roll angle error is less than 2°when measured by the combination of MR / GPS .

• Periodical: Applied Mechanics and Materials (Volumes 347-350)
• Pages: 1059-1062
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.347-350.1059
• Online since: August 2013
• Authors: Peng Cao, Xiao Ming Wang, Fang Xiu Jia, You Long Wu
• Keywords: Mr/GPS, Roll Angle, Trajectory Correction Projectile

References

[1] ZHANG Min-quan, LIU Dong-fang, WANG Dong-mei, et al, A Summary for Trajectory Correction Projectiles, ACTA ARMAMENTARII, 2010, 32(2): 127-130.

[2] LIU Ren-hao, XIA Jin-xiu, WANG Xue-bing, Study on Attitude Measurement of Gun-Launched Cruise Projectile with Geomagnetic Field, JOURNAL OF NORTH UNIVERSITY OF CHINA(NATURAL SCIENCE EDITION), 2009, 30(6): 630-633.

[3] ZHANG Da-yong, WU Wen-qi, WU Mei-ping, et al, Attitude Determination Algorithm Based on Combination of Attitude –GPS and Electronic Compass, NAVICATION OF CHINA, 2007, 73(4): 33-36.

[4] SHI Lian-yan, ZHANG Zi-bin, SONG Wen-yuan, Study of Rocket Body Attitude Solving Method Based on MR/GPS, Journal of System Simulation, 2010, 22(12): 2948-2951.

[5] LIU Jian-jing, ZHANG He, CHENG Xiang, Linear Spline Combination Interpolation of Geomagnetic Map for Attitude Detection, Journal of Detection & Control, 2010, 32(5): 69-73.

[6] HUANG Xue-gong, WANG Jiong, Error Analysis and Compensation Methods for Geomagnetic Signal Detection System, ActaArmamentarll, 2011, 32(1): 33-36.