A One-position Comprehensive Calibration Method for Long-endurance Strapdown Inertial Navigation Systems

doi:10.3969/j.issn.1000-1093.2016.02.011

Abstract

Abstract: A one-position comprehensive calibration method based on inertial frame is proposed to suppress the divergence of errors of a strapdown system. The auxiliary navigation information is provided by GPS and celestial navigation system. The coefficients in the error model of traditional comprehensive calibration methods are basically determined by outputs of the INS, thus the computational errors of INS are introduced into the error model. These modelling errors are amended according to the auxiliary navigation information in the proposed method relaxing the constraint to speed and trajectory of the vehicle. Kalman filter is utilized to estimate the gyro constant drifts. The effectiveness of the method is demonstrated by simulation.

Key words: ordnance science and technology, strapdown inertial navigation system, long-endurance, one-position comprehensive calibration, inertial frame

CLC Number:

TN967.2

FENG Lu，DENG Zhi-hong，WANG Bo，WANG Shun-ting. A One-position Comprehensive Calibration Method for Long-endurance Strapdown Inertial Navigation Systems[J]. Acta Armamentarii, 2016, 37(2): 265-271.

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