ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,706, issued on June 2, was assigned to BEIJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS (Beijing).
"Method for joint estimation of stellar atmospheric refraction and star tracker attitude" was invented by Jie Jiang (Beijing), Jisan Yang (Beijing), Lingfeng Tian (Beijing) and Guangjun Zhang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for joint estimation of stellar atmospheric refraction and star tracker attitude, including: capturing, by a star tracker, an image of stars, and recognizing the image to obtain a matching relationship between an observed star and a reference star; transforming the reference star to a t...