计算机工程 ›› 2009, Vol. 35 ›› Issue (23): 240-242.doi: 10.3969/j.issn.1000-3428.2009.23.084

• 工程应用技术与实现 • 上一篇    下一篇

基于数字波束形成的相干标签信号检测方法

陈伟峰1,邹 欣2,何怡刚1   

  1. (1. 湖南大学电气与信息工程学院,长沙 410082;2. 河北建筑工程学院计算机网络信息中心,张家口 075024)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-12-05 发布日期:2009-12-05

Testing Method of Coherent Tag Signals Based on Digital Beamforming

CHEN Wei-feng1, ZOU Xin2, HE Yi-gang1   

  1. (1. College of Electrical and Information Engineering, Hunan University, Changsha 410082; 2. Computer Network Information Center, Hebei Institute of Architecture Civil Engineering, Zhangjiakou 075024)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-05 Published:2009-12-05

摘要: 以均匀直线阵为基础,提出一种在相干多径环境下检测标签信号的方法。结合加权空间平滑技术的MUSIC算法对相干多径信号的波达方向进行估计,根据波达角用线性约束最小方差准则调整权值,通过数字波束形成技术产生自适应定向波束,达到提高在相干多径环境下检测标签信号成功率的目的。实验结果证明了该检测方法的有效性。

关键词: 标签信号, 加权空间平滑, 波达方向, 数字波束形成

Abstract: Based on uniform linear array, a testing method of tag signals in the coherent multi-path environment is presented. Followed by weighted spatial smoothing MUSIC algorithm, the Direction Of Arrival(DOA) of coherent multi-path signals is estimated. Based on the DOA, weights are adjusted using Linear Constrained Minimum Variance(LCMV) criterion. By adapting Digital Beamforming(DBF) technique, adaptive directional beam is formed to increase the success rate of testing tag signals in the coherent multi-path environment. Experimental results confirm the availability of the testing method.

Key words: tag signals, weighted spatial smoothing, Direction Of Arrival(DOA), Digital Beamforming(DBF)

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