电子学报 ›› 2013, Vol. 41 ›› Issue (3): 582-586.DOI: 10.3969/j.issn.0372-2112.2013.03.027

• 科研通信 • 上一篇    下一篇

数字阵列天线接收通道宽带信号校准与波束形成技术研究

陈文俊1,2, 王建2, 聂在平1   

  1. 1. 电子科技大学电子工程学院, 四川成都 611731;
    2. 南京船舶雷达研究所, 江苏南京 210003
  • 收稿日期:2012-01-02 修回日期:2012-08-03 出版日期:2013-03-25 发布日期:2013-03-25
  • 作者简介:陈文俊 男,1970年生于安徽省怀宁县,博士,高级工程师,硕士生导师,主要研究方向为雷达系统和天线微波技术。 E-mail:wjchen_aq@163.com;王 建 男,1958年生于福建省福州,研究员,主要研究方向为雷达系统。聂在平 男,1946年生于陕西西安,电子科技大学教授,博士生导师,研究方向为计算电磁学、天线理论和技术。

Study on the Calibration of Receiving Channels and the Beamforming Technology for Wideband Digital Array Antennas

CHEN Wen-jun1,2, WANG Jian2, NIE Zai-ping1   

  1. 1. School of Electronic Engineering, University of Electronic Science and Technology, Chengdu, Sichuan 611731, China;
    2. Nanjing Marine Radar Institute, Nanjing, Jiangsu 210003, China
  • Received:2012-01-02 Revised:2012-08-03 Online:2013-03-25 Published:2013-03-25

摘要: 本文提出了一种简洁、实用的天线接收通道宽带信号校准方法.该方法采用零中频信号处理技术,通过理论分析将数字阵列天线接收通道宽带线性调频信号校准分为通道间的时间和相位校准,证明了接收通道间宽带线性调频信号相位校准可以转化为单频信号进行,给出了接收通道间宽带信号的幅度校准方法和时间校准允许的误差范围.在通道校准基础上,采用脉冲压缩技术合成了宽带天线方向图.实验结果表明,本文方法是有效、可行的.

关键词: 数字阵列天线, 宽带信号, 通道校准, 数字波束形成

Abstract: A simple and practical method for the calibration of digital array’s receiving channels is proposed.Theoretical analysis demonstrates that the LFM signal of zero intermediate frequency synchronization among the different receiving channels of an antenna depends on their phase and time calibration.The phase calibration of a wideband LFM signal in receiving channels can be converted into the calibration of a single frequency’s.The method of its amplitude calibration and the required measurment precision of the relative delays for receiving channels calibration are also derived.A wideband beamforming procedure is developed by using pulse compression based on channels calibration.The experimental results prove that the method is effective.

Key words: digital array antenna, wideband signal, channel calibration, digital beamforming

中图分类号: