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http://dx.doi.org/10.5370/KIEE.2011.60.11.2131

Performance Comparison of 2D MUSIC and Root-MUSIC Algorithms for Anti-jamming in GPS Receiver  

Jin, Mi-Hyun (충남대 공과대학 전자공학과)
Lee, Ju-Hyun (충남대 공과대학 전자공학과)
Choi, Heon-Ho (충남대 공과대학 전자공학과)
Lee, Sang-Jeong (충남대 공과대학 전자공학과)
Shin, Young-Cheol (충북대 컴퓨터정보통신연구소, 전자정보대학 제어로봇공학과)
Lee, Byung-Hwan (LIG넥스원(주))
Ahn, Woo-Gwun (국방과학연구소)
Park, Chan-Sik (충북대 컴퓨터정보통신연구소, 전자정보대학 제어로봇공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.11, 2011 , pp. 2131-2138 More about this Journal
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
MUSIC; Root-MUSIC; Anti-jamming; DOA estimation algorithm; GPS;
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