The invention relates to an attitude-associated star point
centroid extraction method in the astronomical positioning and orientation technology, which comprises the four steps of star map denoising, star point local area limitation, star point area fine extraction, motion blurred star point restoration and
centroid calculation, compared with the prior art, an improved multi-window adaptive threshold determination strategy is adopted to improve the robustness of the
algorithm, and the accuracy of the attitude-associated star point
centroid extraction is improved. On the basis of ensuring the reasonability of threshold selection, the calculation amount is reduced to the greatest extent, and the real-time performance is improved; carrying out crude extraction of a star point dispersion range by means of cross projection and distance discrimination; marking of a star point communication area is completed through a coordinate marking and coding method, the
noise influence is effectively avoided, the accurate range of a star point dispersion area is obtained, and a powerful guarantee is provided for subsequent fuzzy star point restoration; the RL
algorithm is used for
processing the star point trailing area, the star point extraction problem under the high dynamic condition is solved, and the wide application range is achieved on the basis that good
measurement precision and real-time performance are guaranteed.