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Proceedings Paper

An unsymmetrical design of IMU for attitude measurement of land vehicles
Author(s): Huaqiang Zhang D.V.M.; Yan Zhao; Yu Chen
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Paper Abstract

Focusing on the determining attitude of land vehicles which equipped with antenna platform for communication satellite, the mathematical model of the integrated navigation system of Strapdown Inertial Navigation System(SINS) and Global Positioning System(GPS) has been built at first. Then the observability of the attitude errors of the integrated navigation system has been concluded to be very weak, and the observability of the heading error is weaker than the horizontal attitude's. Due to this characteristic and the requirement of miniaturization and low-cost, a new inertial measurement unit (IMU) structure has been designed, which comprises three gyros and three accelerometers. Two MEMS gyros were installed on the horizontal plane, and a high degree of accuracy fibre optical gyro was installed in the vertical direction. During navigation period, the Kalman filter is used for calculating the navigation information. Both the theoretical analysis and simulation results show that the new unsymmetrical design of IMU can improve the precision of heading significantly, and when this IMU is integrated with GPS, the attitude precision can meet the requirement of the antenna platform control.

Paper Details

Date Published: 8 September 2011
PDF: 7 pages
Proc. SPIE 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, 81910G (8 September 2011); doi: 10.1117/12.899296
Show Author Affiliations
Huaqiang Zhang D.V.M., Beijing Univ. of Aeronautics and Astronautics (China)
Yan Zhao, Beijing Univ. of Aeronautics and Astronautics (China)
Yu Chen, Beijing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 8191:
International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies
Yuelin Wang; Huikai Xie; Yufeng Jin, Editor(s)

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