| 摘要 |
PURPOSE:To improve acquisition precision of a rough acquisition control system by widening the control band of the rough acquisition control system without depending on the sample rate of a pointing sensor. CONSTITUTION:When the output of a pointing sensor 4 is obtained for a high precision acquisition control, the output of a gimbal angle sensor 68 of a rough acquisition tracking mechanism according to the output of the sensor 4 at the time is sampled at a sampler 71, the sampled outputs are added in an adder 69 and further, they are defined as the target value of the rough acquisition control system through a filter 70 for rough acquisition. Further, an orbit predicted value 72 is added to this value, the output of the gimbal angle sensor 68 of the rough acquisition tracking mechanism is feedback by defining the sum as the target value and a rough acquisition control system is composed. The deviation of the target value and feedback amount is inputted in a rough acquisition tracking compensator 67 and the rought acquisition tracking compensator 67 drives a rough acquisition tracking mechanism 2 so that this deviation may be zero by a PID control, etc. |
