| 摘要 |
<p>A first antenna system (1a) of a monopulse power feed system is placed to lie in a first direction (X) corresponding to the direction in which beam width is to be compressed, a second antenna system (1b) of the monopulse power feed system is placed to lie in a second direction (Y) extending at right angles to the first direction (X), the antenna beam of the first (1a) and the second antenna system (1b) is scanned in directions which exclude the first (X) and the second directions (Y), a sum signal ( SIGMA 1), a difference signal ( DELTA 1), a sum signal ( SIGMA 2) and a difference signal ( DELTA 2) are formed in hybrid circuits (2a,b), and an output signal compressed two-dimensionally is obtained by adding a signal, formed by subtracting the difference signal ( DELTA 1) from the sum signal ( SIGMA 1), to a signal obtained by subtracting the difference signal ( DELTA 2) from the sum signal ( SIGMA 2) in a signal processing section (4). <IMAGE> <IMAGE></p> |
