| 摘要 |
<p>PURPOSE:To set an azimuth angle easily in a short time by computing a deviation between an absolute bearings and a relative bearings of an antenna at a fixed state thereof to correct the relative bearings of the antena at a turning state based on the deviation. CONSTITUTION:An antenna is fixed in an optional direction and when a bearings setting switch 32 is conducted, a turning angle signal thetai as detected with turning angle detector 1 at a fixed state of the antenna and an azimuth angle signal psias detected with a bearings detector 2 are inputted into a subtracter 31 of a bearings corrector 3. The subtracter 31 computs a difference between the bearings signal psi and the turning angle signal thetai to stoke a deviation (psi-thetai) as results of the computation into a memory 33. Thereafter, when the switch 32 is turned OFF to turn the antenna, the turning angle detector 1 detects an angle of turning of the antenna and outputs a turning angle signal theta exhibiting the angle of turning to an adder 34. The adder 34 adds the deviation (psi-thetai) stored in the memory 33 to the turning angle signal theta and outputs an azimuth angle signal (theta+psi-thetai) thereby enabling the setting of an azimuth angle in a short time.</p> |
