Abstract: The attitude measurement equipment based on biaxial servo usually adopts the double reference vector method to measure the attitude, which has high updating rate, simple and reliable. However, the accuracy of attitude measurement is not high due to the influence of atmospheric disturbance and air cover difference. An active star search method for astronomical attitude measurement is proposed, the generation of star search strategy is analyzed, the survey observation and attitude calculation process are briefly introduced, and the practical application effect of this method is verified by experiments, which provides an important reference for the development of a new type of astronomical attitude measurement system for ships.

Key words: Astronomical navigation, Search autonomously, Attitude measurement