| 摘要 |
<p>PURPOSE:To increase sensitivity of an airframe sensor by providing an oscillation detector at the focal point of a parabolic reflecting plate and reflecting radio waves by the reflecting plate and make the waves advance in axial direction of an airframe. CONSTITUTION:A radome 2 is provided in the air frame 1, and an oscillation detector 3 is provided at the focal point of the reflecting plate 4 at the center of the radome 2 to constitute the airframe sensor. A discoid strip line 8 is used as the oscillation detector 3, and a transistor or FET is used for an oscillator, and a stamp antenna 6 is directly connected to radiate radio waves of radiant pattern 7. Radio waves from the oscillation detector 3 is reflected by the opposite reflecting plate 4, and radiant radio waves are advanced in axial direction of the airframe 1 to form a radiant pattern 5. As the oscillation detector 3 is provided at the focal point of the reflecting plate 4 to form single beam, antenna gain is increased and sensitivity of detection of a target is enhanced.</p> |
