| 摘要 |
An IFF laser interrogation receiver achieves a constant false alarm rate with a regulating loop Fig. 3. The theoretical value UW, and the actual value UX derived by a retriggerable monostable W from the output of threshold K, of the false alarm rate are compared (DI) and used to control a control element from whose output a constant false alarm rate is obtained. The threshold circuit K having a controllable threshold value or a regulating amplifier ("video-amplifier") having a controllable amplification factor, can be used as the control element. <IMAGE> |
