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An improved calibration method for a strap-down inertial navigation system (SDINS) is presented here. Calibration accuracy in conventional method is vulnerable to gyro uncertain errors such as random walk, Markov noise and dead band, etc. Earth-rate injection technique is suggested to reduce the calibration errors induced by gyro errors by replacing gyro output measurements with true earth-rate projections...
A calibration method for a strap-down inertial navigation system (SDINS) is presented here. The body-frame drift induced by the variation of the accelerometer sensing axe due to temperature changes is an important source of navigation error not considered in conventional calibration methods. In this paper, we propose an advanced calibration method that can compensate for SDINS error sources including...
A new fiber-optic-sensing scheme capable of performing a polarization-insensitive discrimination of strain and temperature was developed using a long-period fiber grating inscribed on a high-birefringent fiber, which is ended with a Faraday rotator mirror.
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