| 摘要 |
PURPOSE:To keep highly accurate tracking in spite of intermittent tracking by starting monopulse tracking again when a tracking error exceeds a set point or when set pause period has passed. CONSTITUTION:Tracking error voltage is amplified and band-limited by DC amplifiers 1, 1' at the same time and applied to absolute circuits 2, 2'. The outputs from the absolute circuits 2, 2' are supplied to voltage comparators 3, 3', which compare the inputs with the error set voltage previously set up. When the error voltage exceeds the error set voltage or when a tracking timer 5 counts up a fixed time, logical circuits 4, 4' excite relays 7, 8 to start monopulse tracking again. |
