All-day star chart recognition method and device based on space projection and medium

• Main Authors: SUN TING, YU SHIJIE, YANG KANG, WU SIYAO, XING FEI, HAN YINGXUE
• Format: Patent
• Language: Chinese; English
• Published: 08.07.2022
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention discloses an all-day star map recognition method and device based on space projection and a medium, and the method comprises the steps: carrying out the preprocessing of a star map, so as to determine a main star of the star map, and carrying out the preprocessing of a star catalogue, so as to generate a search table; obtaining candidate stars from the search table according to the primary star of the star map and the search table; performing coordinate transformation on each star in the star map and the search table to obtain polar coordinates of each star; and identifying fixed stars in the star map based on the polar coordinates of each star in the star map and the polar coordinates of each star in the corresponding view field range around the candidate star. Therefore, the method is high in recognition precision, can be suitable for a complex imaging environment, can effectively reduce interference, and can randomly change the navigation star density according to the sky area, thereby realiz