基于定标体散射特性的天线极化特性的测量

内容简介：天线的极化特性是描述天线性能的重要参数,是雷达目标特性测量领域的基础性问题,对于实际的雷达天线而言,其极化特性的外场测量是一项复杂而又艰巨的工作.文章提出了一种基于定标体散射特性的天线极化特性的测量处理方法,建立了雷达波束扫描定标体的接收回波模型,可实现对线极化和圆极化天线极化特性的测量,给出了外场实验布局和测量步骤,实测数据和仿真实验证明了该方法的可行性.该方法能够有效地减少设备量和降低测量成本,提高雷达远场的逼真度.

Abstract：The polarization characteristic of antenna is an important parameter for describing antenna performance.And it is a basic problem in radar target property measurement.In practice,testing a real radar antenna polarization pattern is a complex and hard job.A new far-field measurement method based on calibrator target is studied in this paper.The received signal model of antenna's beam scanning the target has been built.The circular and linear polarized antenna can be measured by the proposed method.The external field layout and processing procedure are given.The validity of research work was demonstrated by processing the real data and simulation.This method can reduce the development complexity and production cost of external field test,increased the fidelity at the meanwhile.

作者：戴幻尧, 杨晴, 刘勇, 李永帧, 王雪松,

关键词：天线极化, 外场测量, 定标体, 散射矩阵, 目标散射特性,