[1]李海林,周建江,汪飞,等.随机指向误差对星载共形阵列天线极化参数的影响[J].南京理工大学学报(自然科学版),2012,36(06):0.
 LI Hai lin,ZHOU Jian jiang,WANG Fei,et al.Effects of Random Pointing Errors on Polarization Parameters of Spaceborne Conformal Array Antennas[J].Journal of Nanjing University of Science and Technology,2012,36(06):0.
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随机指向误差对星载共形阵列天线极化参数的影响
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
36卷
期数:
2012年06期
页码:
0
栏目:
出版日期:
2012-12-31

文章信息/Info

Title:
Effects of Random Pointing Errors on Polarization Parameters of Spaceborne Conformal Array Antennas
作者:
李海林周建江汪飞夏伟杰
南京航空航天大学 电子信息工程学院,江苏 南京 210016
Author(s):
LI HailinZHOU JianjiangWANG FeiXIA Weijie
College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
关键词:
随机误差平面天线星载共形天线极化参数
Keywords:
random errorsplanar array antennasconformal array antennaspolarization parameters
分类号:
TN820
摘要:
为分析天线单元的随机指向误差对阵列天线的影响,该文研究平面阵列天线和星载共形阵列天线中随机指向误差产生的极化参数误差。推导了阵列天线的远场极化参数定义及计算公式。给出随机指向误差条件下交叉极化场强的概率分布。通过平面阵列天线和星载共形阵列天线的算例对比,分析不同随机指向误差对极化参数的影响。结果表明:随着随机指向误差的增大,平面阵列天线的极化方向性系数显著减小,交叉极化损失增大,而星载共形阵列天线阵的极化参数变化都小于0.1。
Abstract:
In order to analyze the effects of random pointing errors of antenna elements on array antennas,the polarization parameter errors of planar array antennas and spaceborne conformal array antennas are studied here.The definitions and formulas of polarization parameters in the far field are presented.The probability density of crosspolarization electric field strength with random pointing errors is given.The inferences of different random pointing errors on polarization parameters are analyzed by comparing the examples of planar array antennas and spaceborne conformal array antennas.The results show that with the increases of random pointing errors,the crosspolarization losses are increased and the copolarization directivity is decreased for the planar array antennas,and the changes of polarization parameters are less than 01 for the spaceborne conformal array antennas.

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备注/Memo

备注/Memo:
收稿日期:2012-03-29修回日期:2012-10-21 基金项目:国家自然科学基金(61001150): 作者简介:李海林(1976-),男,博士生,讲师,主要研究方向:共形阵列天线,随机信号处理等,Email:nuaalhls@nuaa.edu.cn。
更新日期/Last Update: 2012-12-29