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热词
    • 1. 发明授权
    • Method and apparatus for reducing the power of jamming signals received
by radar antenna sidelobes
    • 用于降低由雷达天线旁瓣接收的干扰信号的功率的方法和装置
    • US4672378A
    • 1987-06-09
    • US496563
    • 1983-05-20
    • Serge DrabowitchClaude AubryDaniel Casseau
    • Serge DrabowitchClaude AubryDaniel Casseau
    • H01Q3/26G01S7/36
    • H01Q3/2635
    • Secondary lobe cancellation (SLC) is used to reduce the power of jamming signals received by the sidelobes of a main radar antenna. The signal from the radiation pattern of the main antenna is summed with signals from auxiliary radiation patterns. Each auxiliary pattern is chosen to be directional, to have a null or at least a gain minimum in the direction of maximum radiation in the main antenna pattern, to have its phase center close to that of the main antenna pattern, and to have gain minimums in those directions for which the sidelobes of the main antenna pattern are low enough to be insensitive to jamming signals. The various patterns may all be derived from an array antenna, e.g. a multibeam antenna, an aplanatic lens antenna, or a chandelier fed antenna.
    • 次级叶片消除(SLC)用于降低主雷达天线旁瓣接收的干扰信号的功率。 来自主天线的辐射图的信号与来自辅助辐射图的信号相加。 每个辅助图案被选择为有向的,以使主天线图案中的最大辐射方向具有零或至少一个增益最小值,以使其相位中心接近主天线图案的相位中心,并具有增益最小值 在主天线图案的旁瓣足够低以对干扰信号不敏感的方向上。 各种图案都可以从阵列天线导出,例如, 多波束天线,平行透镜天线或馈电天线的吊灯。