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:
Sep. 02, 2025
Filed:
Sep. 29, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Hisayuki Mukae, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
An optical communication system () is configured of communication satellites () each including an optical communication device and an orbital attitude control device, and a ground facility (). The optical communication device includes a biaxial rough-precision directivity control device and a biaxial high-precision directivity control device. From a state in which a first communication satellite () and a second communication satellite () are mutually directed to each other with rough precision, each establishes a high-precision directivity state by the biaxial high-precision directivity control device. And, as mutually tracked by the biaxial rough-precision directivity control device in accordance with a relative position change based on planned orbit information, each corrects a residual directivity error by the biaxial high-precision directivity control device. From a state in which the first communication satellite () and a third communication satellite are mutually directed to each other with rough precision, each establishes a high-precision directivity state by the biaxial high-precision directivity control device. And, as mutually tracked by the biaxial rough-precision directivity control device in accordance with a relative position change based on planned orbit information, each corrects a residual directivity error by the biaxial high-precision directivity control device.