Method for determining geocentric vector based on stellar refraction

• Main Authors: XU YONGZHI, ZHENG SHUAI, WANG LONGHUA, NING XIAOLIN
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2014
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention relates to a method for determining the geocentric vector based on stellar refraction. According to the method, three star sensors are utilized to determine the stellar refraction path so as to determine the plane passing through the geocenter, wherein the star sensor A points to the zenith direction and used for observing direct stars, and the star sensors B and C point to the direction close to the horizontal direction and used for observing refractive stars; an analog direct star map of the star sensors B and C can be obtained according to a star map obtained by the star sensor A and the mounting matrix of the three star sensors, and the direction of stellar before and after refraction can be determined by matching of the analog direct star map and refraction star maps actually shot by the star sensors B and C. Planes that pass through the geocenter can be obtained according to the direction of stellar before and after refraction, the local geocentric vector direction can be determined by wor