基于线阵的多波束比幅法圆锥误差分析

在一维线阵条件下，利用多波束比幅法测量方位角时，随着入射信号仰角变大，方位角测量误差会变大。分析了不同仰角下的波束偏离，提出了利用“修正角度”减小圆锥误差的方法，并比较修正前后测量误差统计值，说明达到了提高方位角测量精度的效果。

Cone-error Analysis of Multi-beam Amplitude-comparison Method Based on Linear Array

Under the condition of one‐dimensional linear array ,when the azimuth is measured by u‐sing multi‐beam amplitude‐comparison method ,the measurement error of azimuth will increase a‐long with the elevation of incident signal .This paper analyzes the beam deviation under different el‐evations ,puts forward a method to reduce the cone error by using the "correction angle",and com‐pares the statistical value of measurement error after and before correction ,show s that the method fetches the effect raising the azimuth measurement accuracy .