| 摘要 |
<p>Disclosed is a method for lateral (azimuth) determination with radio direction finders according to a two-channel principle, with a crossed directional-antenna system, an auxiliary antenna, and cathode-ray-tube indicator. In a cyclically repeated three-step switching sequence, both channels of a two-channel receiver are acted upon. In a first switching step for the purpose of balancing the brightness control and phase response, the channels are acted upon by the sum of the two direction-finder voltages of the crossed directional-antenna system. In the second switching step, the auxiliary antenna voltage is fed to the one channel of the two-channel receiver, while the sum of the direction-finder voltages of the crossed directional-antenna system is fed to the other channel thereof, the phase difference between the output voltages from the two channels being determined and being stored as a reference for the brightness control of the cathode-ray tube. In the third switching step, one direction-finder voltage is fed, through one channel of the two-channel receiver, to vertical deflecting plates of the cathode-ray tube, while the other direction-finder voltage is fed, through the other channel, to horizontal deflection plates of the said cathode-ray tube. The sum of the two direction-finder voltages is used, after a phase shift in accordance with the stored reference, for azimuth-true brightening of the cathode-ray tube. Apparatus for carrying out the method is also disclosed.</p> |
