Journal of South China University of Technology (Natural Science Edition) ›› 2018, Vol. 46 ›› Issue (8): 27-32.doi: 10.3969/j.issn.1000-565X.2018.08.004

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

A Beamforming Method of Nulling Antenna for Impulse Interference Suppression

 ZENG Hao1 FANG Beibei1 JI Lixia1 ZHAO Yunxiao1 DONG Tao2   

  1.   College of Communication Engineering，Chongqing University，Chongqing 400044，China; 2． State Key Laboratory of Space-Ground Integrated Information Technology，Beijing Institute of Satellite Information Engineering，Beijing 100095，China
  • Received:2017-10-17 Revised:2018-01-15 Online:2018-08-25 Published:2018-07-01
  • Contact: 曾浩(1977-)，男，博士，教授，主要从事自适应天线技术研究 E-mail:haoz@cqu.edu.cn
  • About author:曾浩(1977-)，男，博士，教授，主要从事自适应天线技术研究
  • Supported by:
     Supported by the National Natural Science Foundation of China(61501069)

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Abstract: Abstract: When the continuous wave interference and impulse interference presence at the same time for the satellite navigation receiver, the nulling antenna will face the problem of low convergence speed and limited suppression performance to impulse interference assuming the classical LMS algorithm is taken to calculate the weight vector. A new strategy with two parallel calculations for weight vector is proposed according to the various signal characteristics on the condition that we can detect the impulse interference correctly. The new method choose only one weight vector from the two results as the last output of the antenna according whether the impulse interference exits. The theoretic analysis and computer simulation illustrate that the proposed approach could obtain a faster convergence speed and better suppression to the impulse interference compared with the classical LMS algorithm.

Key words: nulling antenna, interference suppression, beamforming, convergence speed

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