| 摘要 |
<p>PURPOSE:To suppress an influence put on the detecting capacity of a rader at the minimum level, and to eliminate a possibility to derive an additional false image, by attaching an axis coinciding nearly with the rotational center axis of an antenna beam, and providing a metallic plate, or a dielectric plate formed in the side shape of a reverse truncated cone, or a reverse multi truncated pyramid. CONSTITUTION:In a structure body provided in the neighborhood of a rader antenna bringing with the rotation of a wave beam, a metallic plate, or a dielectric plate 2' having the axis coinciding nearly with the rotational center axis of an antenna beam l', and having the side shape of the reverse truncated cone, or the reverse multi-truncated pyramid whose upper plane is larger than the lower plane, is provided, and all, or a part of beam power from an antenna directing to the metallic plate, or the dielectric plate is reflected. By reflecting a part, or all of antenna beam power directing to a targeted false image source to the sky, the false image is prevented, and also, it is possible to eliminate the possibility to generate the additinal false image by the change of a beam shape according to the rotation of the antenna beam.</p> |
