基于定标体散射特性的天线极化特性的测量  

Antenna Polarization Characteristic Measurement Method Based on Target Scattering Character of Calibrator

作　　者：戴幻尧[1] 杨晴 刘勇[1] 李永帧[1] 王雪松[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073 [2]中国兵工集团051基地

出　　处：《微波学报》2010年第1期5-11,共7页Journal of Microwaves

基　　金：国家自然科学基金重点项目(60736006);"十一五"总装预研项目;国家自然科学基金青年科学基金项目(60802078);湖南省研究生科研创新项目

摘　　要：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。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 antennal 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.

关 键 词：天线极化 外场测量 定标体 散射矩阵 目标散射特性 

分 类 号：TN957.2[电子电信—信号与信息处理] TP311.132.3[电子电信—信息与通信工程]