Abstract
The starlight navigation system needs the horizontal attitude information provided by the inertial navigation system as its horizontal reference. When the zero position of the accelerometer changes in the undammed inertial navigation system in the critical condition, it is easy to cause the error oscillation and divergence, which directly affects the accuracy of the horizontal reference information of the auxiliary star sensor. Therefore, under the condition of ship-borne use, consider the combination of strapdown inertial navigation system, starlight navigation system and electronic log. The Kalman filter with velocity damping compensates the dynamic error of inertial navigation. The calibration and readjustment technology of the ship borne starlight/inertial combined system is based on the horizontal velocity damping, and the position error and misalignment angle are completed with the help of accurate reference information of starlight navigation.
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