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:
May. 08, 2012
Filed:
Dec. 04, 2008
Go Omori, Nishinomiya, JP;
Tomoyuki Matsuyama, Nishinomiya, JP;
Hitoshi Maeno, Nishinomiya, JP;
Satoshi Adachi, Nishinomiya, JP;
Go Omori, Nishinomiya, JP;
Tomoyuki Matsuyama, Nishinomiya, JP;
Hitoshi Maeno, Nishinomiya, JP;
Satoshi Adachi, Nishinomiya, JP;
Furuno Electric Co., Ltd., Hyogo, JP;
Abstract
An antenna pointing control apparatus and method that reduce a pointing error of an antenna having a two-axis gimbal structure. An antenna installed on a ship hull is controlled to point toward a satellite by an antenna pointing control apparatus having a two-axis mechanism. Movement of the ship hull are recognized every prescribed cycle time, a satellite bearing is measured, and a pointing error of a directional antenna with respect to a satellite is detected. If it is determined that the satellite will not pass within a prescribed region A about an extension line of an azimuth angle (AZ) axis of the ship's hull, then a two-axis control is executed. However, if the satellite will pass within the prescribed region A, then a virtual three-axis control is executed.