Star sensor bad pixel detection and compensation method

• Main Authors: SUN DAKAI, LI QUANLIANG, WANG LI, LYU WEIZHEN, AN SIHUA, XIA MENGQI, LI DANFENG, XU QING, LI XIAO, QIAO CHUAN, YAN PENGBO
• Format: Patent
• Language: Chinese; English
• Published: 27.02.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SURVEYING; TESTING

In a long-term storage and working state, a star sensor may generate bad pixels under the influence of an irradiation environment. The invention provides a detection and compensation method for bad pixels generated by irradiation of a star sensor according to actual measurement data of a test. The method has the advantages of being reusable and high in applicability, the influence of bad pixels on the functional performance of the star sensor is automatically eliminated by optimizing the working process of the star sensor without external intervention, the working life of the star sensor is greatly prolonged, and the environmental adaptability of the star sensor is greatly improved. The invention discloses a bad pixel detection and compensation method for a star sensor. The method comprises three parts of contents, namely parameter recording in a dark field after the star sensor is electrified, parameter recording in a bright field after the star sensor is electrified, and bad pixel detection and compensation