矢量网络分析仪极化特征参数测量校准方法研究  

Full polarization data measurement and calibrationmethodof vector network analyzer

作　　者：李秀娟 刘永信[2] 黄平平[3,4] 苏耘 Li Xiujuan;Liu Yongxin;Huang Pingping;Su Yun(College of Computer Science,Inner Mongolia University,Hohhot 010021,China;College of Electronic Information Engineering,Inner Mongolia University,Hohhot 010021,China;Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Key Laboratory of Radar Technology and Application,Hohhot 010051,China)

机构地区：[1]内蒙古大学计算机学院,呼和浩特010021 [2]内蒙古大学电子信息工程学院,呼和浩特010021 [3]内蒙古工业大学信息工程学院,呼和浩特010501 [4]内蒙古自治区雷达技术与应用重点实验室,呼和浩特010501

出　　处：《电子测量与仪器学报》2022年第10期26-32,共7页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(52064039);内蒙古自治区科技创新项目(2019GG138,2019GG139,2020GG0073);内蒙古自治区科技重大专项项目(2019ZD022)资助

摘　　要：矢量网络分析仪的初始相位具有随机性,利用其对极化特征参数H/α进行测量时会出现较大误差。本文提出了一种利用矢量网络分析仪进行全极化散射矩阵测量及校准,准确获取极化特征参数H/α的方法。首先构建了全极化散射矩阵测量系统,然后利用圆盘,0°二面角和22.5°二面角对测得的极化散射矩阵进行校准,消除了矢量网络分析仪初始相位随机性带来的误差,实现了极化特征参数H/α的准确测量。在微波暗室内对金属平板进行了实验验证,结果表明,通过极化校准得到的散射角H/α与理论值相比误差小于3°,说明了该方法通过测量和校准极化散射矩阵的幅度和相位,能够准确地获得目标的极化特征参数H/α。Due to the randomness of the initial phase of the vector network analyzer,there will be a large error when the polarization characteristic parameter H/αmeasured by using it.In this paper,a method of measuring and calibrating the full polarization scattering matrix by using vector network analyzer is proposed to obtain the polarization characteristic parameter H/α.Firstly,the measurement system of the full polarization scattering matrix is constructed,then the polarization scattering matrix is calibrated by the disk,0°and 22.5°dihedrals.Finally,the error caused by the randomness of the initial phase of the vector network analyzer is eliminated,and the accurate measurement of the polarization characteristic parameter H/αrealized.The results show that the error of the scattering angle H/αby polarization calibration is less than 3 degrees compared with the theoretical value,which indicates that the polarization characteristic parameter H/αthe target can be accurately obtained by measuring and calibrating the amplitude and phase of the polarization scattering matrix.

关 键 词：矢量网络分析仪 极化特征参数 极化散射矩阵 极化校准 

分 类 号：TN957.51[电子电信—信号与信息处理] O441.4[电子电信—信息与通信工程]