吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (3): 941-946.doi: 10.13229/j.cnki.jdxbgxb201603040

• Orginal Article • Previous Articles     Next Articles

Interference suppression method of GPS receiver based on combination of hard-limiter and LMS adaptive algorithm

RI Jong-hun1, 2, SUN Xiao-ying1, QU Liang-dong1, LIU Yan-yan1, YUN Kwang-soek1, 2   

  1. 1.College of Communication Engineering,Jilin University, Changchun 130022,China;
    2.College of Electromagnetic Engineering, Kimchaek University of Technology, Pyongyang 999093, D.P.R.Korea
  • Received:2015-03-05 Online:2016-06-20 Published:2016-06-20

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Abstract: Based on the small signal suppression performance of hard-limiter, the interference signal is obtained. The reference signal of adaptive algorithm is formed using output signals of the hard-limiter; then based on the adaptive performance of Least Mean Square (LMS), the strong time-varying interference of GPS receiver input signal is cancelled. Finally, the interference signal is suppressed and the effective signal is obtained. Simulation results show that the proposed algorithm has good suppression performance for unknown strong interference signal and improve interference suppression capability by more than 30 dB when Signal to Interference Ratio (SIR) is in the range from -25 dB to -35 dB.

Key words: communication technology, GPS receiver, interference suppression, hard-limiter, least mean square(LMS) algorithm

CLC Number: 

  • TN929.5
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