Journal of South China University of Technology(Natural Science Edition) ›› 2017, Vol. 45 ›› Issue (1): 53-58.doi: 10.3969/j.issn.1000-565X.2017.01.008

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

Multiple-Objects Nulling Antenna with Directional Constraint

ZENG Hao1,2 ZHOU Jian-wen1 WANG Qiu-shi1 WANG Hong-liang1 HE Hai-dan2   

  1. 1.College of Communication Engineering,Chongqing University,Chongqing 400044,China; 2.Southwest Electronic Technology Research Institute,Chengdu 610036,Sichuan,China
  • Received:2016-04-11 Revised:2016-06-27 Online:2017-01-25 Published:2016-12-01
  • Contact: 曾浩( 1977-) ，男，教授，主要从事抗干扰通信技术研究． E-mail:haoz@cqu.edu.cn
  • About author:曾浩( 1977-) ，男，教授，主要从事抗干扰通信技术研究．
  • Supported by:
    Supported by the Key Project of the Natural Science Foundation of Chongqing( cstc2013jjb40005)

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Abstract:

In satellite navigation receivers,traditional nulling antennas cannot form the main lobe of satellite signal points.In order to form a plurality of main lobes of an antenna corresponding to different satellite signals and thus to improve array gains,an orientation constraint condition is introduced into this paper,and direct matrix inversion is adopted to solve the optimal weight vectors of each satellite signal.Moreover,a beamforming is completed.Then,the computation amount of the proposed algorithm is discussed,and an analytical expression of the array gains is proposed.It is found that this algorithm not only suppresses the external disturbance but also overcomes the mutual interference between satellite signals,and it causes the main lobes of each satellite signal to form,thus improving output SNR.In addition,the effectiveness of the proposed algorithm is demonstrated by the simulation results of pattern and output SINR.

Key words: antenna arrays, interference suppression, optimization

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