| 摘要 |
PURPOSE:To automatically and easily control the direction of an antenna toward relay spot just with the input of the position data given from the relay spot and also to continue the tracking of the antenna even though a relay car or a relay helicopter is hidden behind a building, etc. CONSTITUTION:A data processing part 1 calculates the angle of an antenna based on the position information included in the GPS data given from a relay car or a relay helicopter and then sends the antenna angle to an antenna pointing part 2 and an angle of the antenna is decided. The antenna rotational control data are sent to an antenna control part 4 via a data transmitting part 3. The part 4 controls the direction of the antenna 6. An antenna monitoring part 5 acquires the angle data from the present angle information on the antenna 6 and sends the data to the part 2. The part 2 compares its stored antenna control angle with the present angle and stops the antenna rotational control when the coincidence is confirmed between both angles. |
