| 摘要 |
PURPOSE:To attain a stable predictive-automatic tracking system by using the data on the real digital angle given from an antenna device to compensate the data on the predictive angle. CONSTITUTION:A digital superposition system predictive tracking device 3 compares the antenna real angle data 14 with the antenna predictive angle data 11 until a tracking receiver 2 delivers a satellite catch informing signal 10 for tracking receiver. Then an output is delivered to an antenna device 1 in the direction where coincidence is obtained between both data 11 and 14. Then the device 1 catches the receiver 2 approximately toward the satellite. When the signal 10 is delivered, the device 1 is driven with the tracking error voltage 13 not by the antenna driving voltage 12 given from the device 3 and un the direction where the voltage 13 is set at zero. |
