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具有电子波束扫控和形成的雷达天线对系统的战略要求,提供了天线图几乎瞬时自适应的优点.目前,几乎所有这种类型的天线都作为相控阵来实现,阵中,各个天线单元通过移相器与发射机或接收机相连.为了恰当地引导发射或接收平面波所必需的相位移用计算机计算.单元的幅度具有固定的值(图1).波束形成可以在一定的限制内,用附加的波前曲率(破坏波束)来实现,分配网络中的相位误差以及在破坏情况下,甚至幅度误差,可由适当控制移相器来补偿.
The strategic requirement of a radar antenna with electron beam sweep and formation provides an almost instantaneous adaptation of the antenna pattern.At present, almost all of these types of antennas are implemented as phased arrays in which the individual antenna elements Connected through a phase shifter to a transmitter or receiver The phase shift necessary to properly direct the transmission or reception of plane waves is computationally calculated The amplitude of a cell has a fixed value (Figure 1) Beamforming can be within certain limits, With additional wavefront curvature (breaking the beam) to achieve, distribute the phase error in the network and in the case of damage, or even amplitude error, can be compensated by the appropriate control of the phase shifter.