| 摘要 |
PURPOSE:To certainly trap and track the laser beam from a partner station by having an integrating compensator for common use even when a trapping control loop is changed over to a tracking control loop. CONSTITUTION:At the time of the operation of a trapping control loop, changer- over switches 9, 12 are connected on an A-side and the output of an angle sensor 2 is guided to an integrating compensator 10 to calculate an integrated compensation value for angle control and, at the time of the operation of a tracking control loop, the switches 9, 12 are connected on a B-side and the output of an optical system sensor 6 is guided to the compensator 10 to calculate an integrated compensation value for tracking control. The output of the sensor 2 and the output of the sensor 6 are selectively inputted to the compensator 10 by the switch 12 operated in connection with the switch 9 and the integrated compensation value output of the compensator 10 is sent to a mirror driving circuit 4 while a proportional compensation value and a differentiated compensa tion value are added to said output by an adder 11. |
