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Initial Alignment for SINS based on Low-cost IMU | Yi | Journal of Computers
Journal of Computers, Vol 6, No 6 (2011), 1080-1085, Jun 2011

Initial Alignment for SINS based on Low-cost IMU

Jiong Yi, Lei Zhang, Rong Shu, Jianyu Wang


The initial alignment is vital to the strapdown inertial navigation system (SINS). In this work,  an efficient initial alignment method for SINS based on a six-degree of freedom inertial measurements unit (IMU) is proposed. The three dimensional linear accelerations and angular rates are acquired from a data acquisition board which contains a low-cost IMU. Preprocess the gyro data and modeling the SINS error model for initial alignment. Analysis the observability of this SINS error model and then simplify the model based on the observability. A kalman filter is conducted to estimate the misalignment angle. The results show that the initial alignment method proposed in this paper is advisable for a SINS based on low-cost IMU on a stationary base.


SINS; Initial Alignment; Kalman Filter; Obervability; Data Acquisition


[1] YEON FUH JIANG, Error Analysis of Analytic Coarse Alignment Methods, IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, VOL.34, NO.1 JANUARY 1998.

[2] Zhang Tianguang, Wang Xiuping, Strapdown Inertial Navigation Technology, National Defense Industry Press.

[3] Yi jiong, Zhang lei, GPS/SINS/BARO Integrated Navigation System for UAV, IFITA 2010 Proceedings, VOL.3, 19-25.

[4] Britting,K.R, Inertial Navigation System Analysis. New York: Wiley Interscience, 1971, ch.​9.

[5] YEON FUH JIANG, YU PING LIN, Error Estimation of INS Ground Alignment Through Observability Analysis, IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, VOL.28, NO.1 JANUARY 1992.

[6] JIANG CHENG FANG, DE JUN WAN, A Fast Initial Alignment Method For Strapdown Inertial Navigation System on Stationary Base, IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, VOL.32, NO.4 OCTOBER 1996.

[7] Zhang Chuanbin, Tian Weifeng, Jin Zhihua, A Novel Method Improving the Alignment Accuracy of A Strapdown Inertial Navigation System on A Stationary Base, MEASUREMENT SCIENCE AND TECHNOLOGY, 15(2004) 765-769.

[8] YAN Gong-min, QIN Yong-yuan, Initial Alignment Accuracy Analysis and Simulation of Strapdown Inertial Navigation System on a Stationary Base, Computer Simulation, VOL.23, NO.10 OCTOBER 2006.

[9] Xionlong Wang, Gongxun SHEN, A fast and accurate initial alignment method for strapdown inertial navigation system on stationary base, Journal of Control Theory and Applications 2(2005) 145-149.

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Journal of Computers (JCP, ISSN 1796-203X)

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