Systematic Calibration Method for FOG Inertial Measurement Units

Zhen Yu Zheng; Yan Bin Gao; Kun Peng He

doi:10.4028/www.scientific.net/AMR.662.717

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 662Systematic Calibration Method for FOG Inertial...

Systematic Calibration Method for FOG Inertial Measurement Units

Abstract:

As an inertial sensors assembly, the FOG inertial measurement unit (FIMU) must be calibrated before being used. The paper presents a one-time systematic IMU calibration method only using two-axis low precision turntable. First, the detail error model of inertial sensors using defined body frame is established. Then, only velocity taken as observation, system 33 state equation is established including the lever arm effects and nonlinear terms of scale factor error. The turntable experiments verify that the method can identify all the error coefficients of FIMU on low-precision two-axis turntable, after calibration the accuracy of navigation is improved.

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Periodical:

Advanced Materials Research (Volume 662)

Pages:

717-720

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.662.717

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Online since:

February 2013

Authors:

Zhen Yu Zheng, Yan Bin Gao, Kun Peng He

Keywords:

Fiber Optic Gyroscope, Inertial Measurement Units, Kalman Filter (KF), Systematic Calibration

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References

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