| 摘要 |
<p>A reception system for satellite signals includes parabolic petals (12), each having a reflective receiving surface, each of the petals constituting one radial segment of a surface of a paraboloid. There is also provided a servo-motor (28) for controlling the polar position of one or more of the petals about the common polar axis, thereby enabling the overlap or nesting of one or more of the petals onto each other, this providing an amplification control means for the receiving surface. Also provided is an actuator for changing and controlling the direction of the polar axis of the reception system. A control shaft (30) is furnished for electromechanically defining a particular channel parameter reception matrix, this matrix constituting one or more of the channel parameters of signal strength, geosynchronous direction of the antenna axis, transponder polarity and frequency, video polarity and bandwidth, and subcarrier frequency. By preprogramming many such control shafts, a tuning panel (34) can be created by which a user can press a particular control shaft to tune into a particular channel of a particular transponder of a particular satellite. Included also are an enclosure for enclosing the folded satellite dish and means for automatically deploying the dish from its enclosure.</p> |
