北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2013, Vol. 36 ›› Issue (5): 15-18.doi: 10.13190/j.jbupt.2013.05.004

• 论文 • 上一篇    下一篇

电偶极子组天线幅相误差校正

王桂宝1, 陶海红1, 王兰美2   

  1. 1. 西安电子科技大学 雷达信号处理国防科技重点实验室, 西安 710071;
    2. 西安电子科技大学 理学院, 西安 710071
  • 收稿日期:2012-02-24 出版日期:2013-10-31 发布日期:2013-08-09
  • 作者简介:王桂宝(1977-),男,博士生,E-mail:gbwang@stu.xidian.edu.cn;陶海红(1976-),女,教授,博士生导师.
  • 基金资助:

    国家自然科学基金项目(60971108,61201295);中央高校基本科研业务费专项项目(K5051307017)

Gain and Phase Error Calibration of a Dipole Triad Antenna

WANG Gui-bao1, TAO Hai-hong1, WANG Lan-mei2   

  1. 1. National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China;
    2. School of Science, Xidian University, Xi'an 710071, China
  • Received:2012-02-24 Online:2013-10-31 Published:2013-08-09

摘要:

存在幅相误差时,基于特征值分解的子空间类算法性能急剧恶化。为了校正幅相误差,用一个线极化校正源信号,无须准确已知校正源的波达方向。在校正过程中只需将待校正电偶极子组绕x轴旋转90°,根据旋转前后到达角的关系以及对应电场分量的比值关系得到到达角的估计,进而得到幅相误差的估计,导出了到达角和幅相误差估计的闭式解。数值仿真结果证明了该方法的有效性。

关键词: 阵列信号处理, 参数估计, 误差校正, 电偶极子组, 幅相误差

Abstract:

The performance of subspace algorithm which is based on eigenvalue decomposition degrades obviously, when gain and phase errors exist among component antennas of a dipole triad. To calibrate the gain and phase errors, a reference signal with unknown direction of arrival (DOA) is utilized in this paper. Two sets of data collected by the dipole triad before and after rotation around its x-axis are used. The closed-form solution of DOA and gain and phase errors are got by making use of the electromagnetic field ratio and DOA before and after rotation. Finally, the simulation results verify the efficacy of the proposed algorithm.

Key words: array signal processing, parameter estimation, error calibration, dipole triad, gain and phase error

中图分类号: