| 摘要 |
A mount 1, suitable for an antenna 5, comprises at least two axes A - C for rotational movement. One of the said axes B is at an oblique angle relative to the other axis or axes A, C. The axes A - C may be an azimuth axis A, a central axis B and a polarisation axis C. The central axis B may pass through an elliptical surface, with a wire type roller bearing, which extends through a hollow cylindrical member 2, 3 at an angle in the range of thirty to sixty degrees and preferably forty five degrees. The polarisation axis C and azimuth axis A may pass through circular surface with bearings. Rotational movement at the axes A - C may be provided manually or may be automatically controlled via electric drive systems. Rotational adjustments may be performed in a set sequence where the central axis B rotation is performed first. The lightweight and rigid mount structure 1 may be controlled to support and rapidly steer an antenna as it tracks a satellite across an arc in the sky. |
