A method for increasing the output frequency of star sensor based on gyroscope assistance
A technology of star sensor and output frequency is applied in the field of increasing the output frequency of star sensor based on the aid of gyroscope, which can solve the problem of low data update frequency and achieve the effect of increasing the update frequency
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[0025] Such as figure 1 , the invention discloses a method for improving the output frequency of a star sensor based on gyroscope assistance, comprising the following steps:
[0026] (1) The star sensor outputs the star map of the current frame (time t), and extracts the position of the star point in the star map of the current frame.
[0027] (2) According to the angular velocity information output by the gyroscope, predict the position of the star point in the star map of the current frame at time t+Δt, assuming that the 3×3-dimensional attitude matrix of the star sensor in the celestial coordinate system is A, and the navigation star S i The direction vector in the celestial coordinate system is v i , the direction vector can be measured by the star sensor, and its corresponding image vector in the star sensor coordinate system can be expressed as w i . The position of the center point of the star sensor in the star map plane is expressed as (x 0 ,y 0 ), Navstar S i ...
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