The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2025
Filed:
Jun. 27, 2022
Applicant:
Maxar Space Llc, Palo Alto, CA (US);
Inventor:
Thomas Joseph Holmes, Rapid City, SD (US);
Assignee:
Maxar Space LLC, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64G 1/24 (2006.01); B64G 1/26 (2006.01); B64G 1/36 (2006.01); B64G 1/28 (2006.01);
U.S. Cl.
CPC ...
B64G 1/244 (2019.05); B64G 1/26 (2013.01); B64G 1/361 (2013.01); B64G 1/245 (2023.08); B64G 1/28 (2013.01); B64G 1/36 (2013.01);
Abstract
An attitude control system for a satellite is presented that can determine on time values for attitude control thrusters without use of attitude rate sensors, such as those based on gyros. The attitude control systems uses the attitude values from a star tracker to determine both attitude adjustment values and attitude adjustment rate values directly from the star tracker values, where the processing is performed using quaternions. From the attitude adjustment values and attitude adjustment rate values, a set of thruster on time values are determined.