Study on dynamic angle-measurement compensation for star sensor

A dynamic angle-measurement compensation method is proposed to solve the star sensor image shift question caused by the attitude change during measuring. The mathematical model of star point pixel gray distribution is established when the star point makes uniform accelerated rectilinear motion relative to the photosensitive surface of image sensor. Then the principle and method of angle-measurement compensation is put forward. This method can also fit the situation of the star point making uniform rectilinear motion relative to the photosensitive surface of image sensor. Later, simulations are carried out. The results show that the dynamic angle-measurement error of the star sensor after compensation is perfect enough.