| 摘要 |
PURPOSE:To obtain accurate, stable performance, by providing a loop gain controller to a distance tracking part and correcting variation in error detection sensitivity due to a difference in the condition of a target. CONSTITUTION:The loop gain controller 7 is arranged at the distance tracking part to discriminate the condition of the target from a distance signal, antenna elevation angle, and machine-body pitch signal, correcting the variation in error detection sensitivity. For example, when an angle of incidence decreases, an error detector 6 decreases in error detection sensitivity. The loop gain control circuit 7 discriminates the condition of the decrease in error detection sensitivity from the distance signal, antenna elevation signal, and machine-body pitch signal and a control error signal E is outputted after the error signal is amplified properly. |
