Calibration method for the laser gyro strapdown inertial navigation system based on norm-observation

被引：0

作者：

Dong C. ^{[1
]}

Ren S. ^{[1
]}

Chen X. ^{[1
]}

Wang C. ^{[1
]}

机构：

[1] Space Control and Inertial Technology Research Center, Harbin Institute of Technology, Harbin

来源：

Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2018年 / 47卷 / 09期

关键词：

Accelerometer; Calibration; Laser gyro; Norm observation; Three-axis turntable;

D O I：

10.3788/IRLA201847.0917007

中图分类号：

学科分类号：

摘要：

In order to reduce the influence of turntable's errors on the calibration accuracy of SIMU, the position and the rate test plans of the regular icosahedrons -12 points were designed by using norm observation of the specific force and the angular velocity vectors. Firstly, the twelve static positions were utilized to calibrate the accelerometers' biases, scale factors and mounting errors in the gravity field. Secondly, using single-axis rate and double-axis position mode, namely the outer axis of the three-axis turntable was working in angular rate mode, both the inner and the middle axes were in the twelve positions, the RLGs' biases, scale factors and mounting errors were calibrated. At the same time, unification of the accelerometer and the gyro parameter coordinate systems was realized by using the SIMU frame coordinate system. Finally, simulation analysis shows that this method can effectively suppress the influence of turntable's errors on the calibration results of SIMU, the relative calibration errors of the scale factors of the accelerometers' and the gyros', and the calibration errors of the installation error matrix are less than 10-5, the calibration errors of accelerometer biases are less than 10 μg, the calibration errors of gyro biases are less than 0.01 (°)/h which are in the same order of magnitude of the measurement noises, in the situation that perpendicularities between the turntable's adjacent axis lines are at the arc second level and that angular position errors are less than 1'. © 2018, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

引用

共 21 条

[1] Zhong M., Tang J., Jiang Q., Et al., Coning algorithm of laser gyro strapdown inertial navigation system in vibrating condition, Infrared and Laser Engineering, 43, 8, pp. 2626-2630, (2014)
[2] Xu Y., Wang Y., Su Y., Et al., Research on the calibration method of micro inertial measurement unit for engineering application, Journal of Sensors, 1, (2016)
[3] Bu F., Strapdown inertial measurement unit of test and calibration, (2011)
[4] Yu H., Lv X., Tang J., Et al., Establishment and analysis of high-order error model of laser gyro SINS, Infrared and Laser Engineering, 42, 9, pp. 2375-2379, (2013)
[5] Cai Q., Yang G., Song N., Et al., Systematic calibration for ultra-high accuracy inertial measurement units, Sensors, 16, 6, pp. 940-956, (2016)
[6] Dong C., Ren S., Chen X., IMU calibration method based on analysis for the errors of three-axis turntable, Systems Engineering and Electronics, 38, 4, pp. 895-901, (2016)
[7] Pan J.Y., Zhang C.X., Cai Q.Z., An accurate calibration method for accelerometer nonlinear scale factor on a low-cost three-axis turntable, Measurement Science and Technology, 25, 2, pp. 2-7, (2014)
[8] Zhang Q., Wang L., Liu Z., Et al., An accurate calibration method based on velocity in a rotational inertial navigation system, Sensors, 15, 8, pp. 18443-18458, (2015)
[9] Du H., Zhang R., Liu P., Et al., Realization of attitude algorithm module in strapdown inertial guidance system, Optics and Precision Engineering, 16, 10, pp. 1956-1962, (2008)
[10] Xu Y., Zhu X., Su Y., A novel network calibration method for inertial measurement units, Proceedings of the Institution of Mechanical Engineers Part G Journal of Aerospace Engineering, 229, 7, pp. 1336-1348, (2014)

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