YANG Xiao-dong, DENG Tai-guang. Constant error analysis of two-point comprehensive calibration in gimbaled inertial navigation system[J]. Journal of Traffic and Transportation Engineering, 2011, 11(3): 100-104. doi: 10.19818/j.cnki.1671-1637.2011.03.017
Citation: YANG Xiao-dong, DENG Tai-guang. Constant error analysis of two-point comprehensive calibration in gimbaled inertial navigation system[J]. Journal of Traffic and Transportation Engineering, 2011, 11(3): 100-104. doi: 10.19818/j.cnki.1671-1637.2011.03.017

Constant error analysis of two-point comprehensive calibration in gimbaled inertial navigation system

doi: 10.19818/j.cnki.1671-1637.2011.03.017
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  • Author Bio:

    YANG Xiao-dong(1963-), male, professor, +86-532-51858653, yangxdqtxy@163.com

  • Received Date: 2011-01-16
  • Publish Date: 2011-06-25
  • In order to estimate and compensate the comprehensive calibration errors caused by various factors, the influences of exoteric measuring information error and inertial platform horizontal error angle in two-point comprehensive calibration of gimbaled inertial navigation system (INS) on the calibration effect of constant gyro drift were studied in theory. The relation between the maximum values of constant gyro drift error and calibration interval was deduced. Two-point calibration process affected by exoteric measuring information error was simulated. Analysis result shows that under current precision levels of exoteric measuring information error and platform horizontal error angle, the magnitudes of the maximum values induced by the two errors are both 0.001 (°) ·h-1 when the interval time of two adjustments is 10 h. The two kinds of errors are both linear with the estimation error of two-point calibration approach on constant gyro drift. In order to improve the precision of two-point calibration, it is important to increase exoteric measuring information precision and inertial platform horizontal precision efficiently.

     

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