The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Performance Comparison of 2D MUSIC and Root-MUSIC Algorithms for Anti-jamming in GPS Receiver

GPS 재밍 대응을 위한 2차원 MUSIC과 Root-MUSIC 알고리즘의 성능 비교

  • 진미현 (충남대 공과대학 전자공학과) ;
  • 이주현 (충남대 공과대학 전자공학과) ;
  • 최헌호 (충남대 공과대학 전자공학과) ;
  • 이상정 (충남대 공과대학 전자공학과) ;
  • 신영철 (충북대 컴퓨터정보통신연구소, 전자정보대학 제어로봇공학과) ;
  • 이병환 (LIG넥스원(주)) ;
  • 안우근 (국방과학연구소) ;
  • 박찬식 (충북대 컴퓨터정보통신연구소, 전자정보대학 제어로봇공학과)
  • Received : 2011.09.27
  • Accepted : 2011.10.23
  • Published : 2011.11.01
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Abstract

GPS is vulnerable to jamming because of extremely low signal power. Many anti-jamming techniques are studied for complement this vulnerability. Anti-jamming techniques using array antenna are most effective technique and these techniques are required the DOA estimates. MUSIC algorithm and Root-MUSIC Algorithm are typical algorithms used in DOA estimation. Two algorithms have different characteristics, so the choice of an algorithm may depends on many factors such as the environment and the system requirements. The analysis and performance comparison of both algorithms is necessary to choose the best method to apply. This paper summarizes the theory of MUSIC and Root-MUSIC algorithms. And this paper extends both algorithm to estimate two-dimensional angles. The software simulator of both algorithms are implemented to evaluate the performance. Root-MUSIC algorithm has the computational advantage on ULA. MUSIC algorithm is applicable to any antenna array. MUSIC shows better estimation performance when number of array element is small while the computational load of MUSIC is much higher than Root-MUSIC.

Keywords

References

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