Invention Grant
US08174456B2 Control system and method for reducing directional error of antenna with biaxial gimbal structure 有权
采用双轴万向节结构降低天线方向误差的控制系统和方法

Control system and method for reducing directional error of antenna with biaxial gimbal structure
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.
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