| 摘要 |
PURPOSE:To exactly prevent the generation of a spurious bearing with simple constitution, by displaying the output ratio of 2 sets of directional antennas which are shifted each other and rotate synchronously. CONSTITUTION:The receiving outputs from 2 sets of directional antennas 1, 2 which are shifted each other and rotate synchronously through the synchronizing signal generator 5 and the antenna controllers 3, 4 are made to branch by the branching filters 6, 7, etc., and are applied to the CRT18 through the frequency converting circuits 8, 10 and the differential logarithmic amplifier 16, etc. According to this constitution, the output ratio of the antennas 1, 2 is displayed on the CRT18, the bearing signals which are not influenced by the low peak waveform value due to the side lobe of the outputs of the antennas 1, 2 are displayed, respectively, and the generation of a spurious bearing is prevented with simple constitution for which combination of omnidirectional antennas is not required. |
