To reduce the error in transfer alignment caused by reference information delay,a time delay estimation method is developed based on least-squares curve fitting of the angular rate ***,the gyro sensor measurements of ...
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To reduce the error in transfer alignment caused by reference information delay,a time delay estimation method is developed based on least-squares curve fitting of the angular rate ***,the gyro sensor measurements of the main strapdown inertial navigation system（M-SINS） and the slave strapdown inertial navigation system（S-SINS） are recorded for a few seconds and the integration of the data is ***,the possible maximum range of the delay value is defined and the points of the curve at different intervals are *** square of the differences between the corresponding points are ***,the delay estimation can be acquired by the least-squares curve fitting of the M-SINS and the S-SINS.A delay compensation method by local data shifting is also *** simulation results demonstrate the effectiveness of delay estimation and indicate that the estimation accuracy is independent of the delay *** the local data shifting compensation method can effectively reduce the errors of the transfer alignment caused by the reference information delay.
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