Autonomous guidance system with position and velocity feedback using modern control theory
CA 2273932 A1 · Owner: Xing, Guang-Qian · Inventors: Xing, Guang-Qian; Parvez, Shabbir Ahmed
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for orbit control and maintenance techniques for both individual satellites and for multiple satellites in a constellation utilizing Modern Feedback Control for providing precise autonomous on-board navigation and control. This control system can place any satellite in any orbit position in a constellation, including the acquisition of the initial distribution for the constellation after satellite separation from launched vehicles. This system can also maintain distribution within a constellation including , station relocation and station keeping. Utilizing GPS position information the orbit state vector is determined and modern advanced multivariable feedback …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.