高机动三坐标雷达比幅测高误差分析及修正

讨论了比幅测高的基本原理,分析了影响比幅测高精度的各种因素。定量计算了由这些因素引起的误差量。并提出了一种简单易行的修正方法,即根据一次雷达的测高值和二次雷达的测高值计算出天线波束指向的调整量,对天线阵面波束指向进行微调,从而提高了测高精度。由于对天线波束指向的调整在很小的范围内,故对天线的副瓣及波瓣宽度指标的影响可忽略,从而不会影响到雷达系统的其他性能。

Error Analysis and Correction of Amplitude-comparison for High Mobility 3D Radar

Basic principle of amplitude-comparison in height finding is discussed,and various factors affecting the accuracy of amplitude-comparison in height finding are analyzed.Errorness quantity caused by these factors is calculated.A single correction method is provided,that is,based on the height finding value of the primary radar and the height finding value of the secondary radar,the paper calculates the adjustment quantity of the antenna beam direction,micro-adjusts the arrary of antenna,and so that it improves the accuracy of height finding.Because the adjustment of antenna beam direction is in a very small range,so the effection on antenna sidelobe and beamwidth can be omitted,that is to say,it will not make any effection on other performances of the radar system.