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为降低雷达跟踪低空目标中时的多径误差,采用了基于阵列天线的、用Taylor和Bayliss分布来满足单脉冲测角中的和、差波束都具有低副瓣电平的方法。该方法使用独立馈电的功率分配/合成网络,并对其分别应用Taylor分布及Bayliss分布进行幅度加权。当雷达在低仰角跟踪时,降低多径误差的阵列天线波束的形成技术,可消除或降低低仰角跟踪目标时的测量误差。通过Matlab仿真和多径误差分析表明,在主瓣半功率带宽以外的下降沿及副瓣区,多径误差有明显的改善。
In order to reduce the multipath error when the radar is tracking the low-altitude target, an array antenna based method is used to satisfy the sum of single-pulse goniometry with Taylor and Bayliss distribution, and the difference beams have low sidelobe level. This method uses independently fed power distribution / synthesis networks and applies amplitude weighting to the Taylor distribution and the Bayliss distribution, respectively. When the radar is tracking at low elevation angles, the array antenna beamforming technique that reduces multipath errors eliminates or reduces measurement errors at low elevation angles. Through Matlab simulation and multipath error analysis, it is shown that the multipath error is obviously improved in the falling edge and the sidelobe area besides the half power bandwidth of the mainlobe.