Control method of indexing mechanism for single-axis rotation modulation inertial navigation system

The invention discloses a control method of an indexing mechanism for a single-axis rotation modulation inertial navigation system. The method comprises the following steps: determining a modulation mode of the single-axis rotation modulation inertial navigation system; determining a reference angle position according to the modulation mode; setting a target angle position and a next target angle position based on the reference angle position; when the indexing mechanism is in a rotating state, monitoring an interruption signal sent by the navigation computer, determining driving information of the indexing mechanism based on the target angle position, the next target angle position and the reference angle position during interruption, and determining the driving information of the indexing mechanism based on the current rotating angular speed and interruption duration of the indexing mechanism; updating the target angle position and the next target angle position; and after the interruption is finished, driv