| 摘要 |
PURPOSE:To recognize abnormal vibration of an antenna in operation by comparing an output of a means detecting a vibration of a body of an aircraft with an output of a means detecting an antenna mounted on the air-craft at a comparator means. CONSTITUTION:An antenna unit 4 is fixed to a device front part via a mount base 3 and a gimbal 2 drives the antenna 1 horizontally and vertically by using a signal from an external antenna servo signal generaring section 5. The antenna unit 4 generates a feedback signal and the antenna 1 is operated stably. A signal converting section 10 convers a signal of + or -2rad/sec of the servo signal generating section 5 into a signal corresponding to the vibration at normal operation. The 1st vibration detector 6 detects the vibration generated in the antenna 1 and the 2nd vibration detecror 7 detects the vibration of the body. A comparison detector 8 extracts on the (+) data among data of the 1st and 2nd vibration detectors 6, 7, the data is compared with the signal of the signal converting section 10 at an abnormal vibration detection section 12 and an abnormal signal is outputted to a display section 13. |
