| 摘要 |
PURPOSE:To eliminate the need for man to judge side lobe tracking or not by utilizing a nature of a monopulse antenna pattern to prohibit automatically antenna sidelobe tracking. CONSTITUTION:A signal received by a monopulse antenna 1 is inputted to amplitude detectors 4a-4c and phase detectors 5a, 5b through mixers 2a-2c and amplifiers 3a-3c. Outputs from the phase detectors 5a, 5b are inputted to a tracking signal processor 7. Outputs from the amplitude detectors 4a-4c are inputted to an amplitude comparator 9 through weighting circuits 8a, 8b. The amplitude comparator 9, when a sum channel signal is smaller than a difference channel signal, actuates a tracking prohibition controlling circuit 10 to cause a tracking prohibition. |
