Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Root-assisted MUSIC algorithm for the efficient DOA estimation in Multi-Jammer Environments

다중 재머 환경에서 DOA 추정 성능 개선을 위한 Root-assisted MUSIC 알고리즘

  • Lee, Ju Hyun (Department of Electronics Engineering, Chungnam National University) ;
  • Choi, Heon Ho (Department of Electronics Engineering, Chungnam National University) ;
  • Choi, Yun Sub (Department of Electronics Engineering, Chungnam National University) ;
  • Lim, Deok Won (Satellite Navigation Department, Korea Aerospace Research Institute) ;
  • Park, Chansik (Department of Control, Robot Engineering, Chungbuk National University) ;
  • Lee, Sang Jeong (Department of Electronics Engineering, Chungnam National University)
  • Received : 2013.06.13
  • Accepted : 2013.08.30
  • Published : 2013.08.30
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Abstract

This paper proposes a root-assisted MUSIC algorithm which uses a combination of the MUSIC and the root-MUSIC algorithm. This algorithm consists of two steps. Firstly, a coarse DOA is computed by the root-MUSIC algorithm. Secondly, a precise DOA estimation is carried out by the MUSIC algorithm in the reduced searching range. This paper analyzes the accuracy and the resolution performance of the proposed DOA estimation method using a software simulation platform.

본 논문에서는 AOA (Angle of Arrival)기반의 재머위치 결정기법에 사용되는 DOA 추정 알고리즘을 대상으로 Root-MUSIC으로 1차 DOA 추정을 수행한 후 MUSIC을 이용한 2차 DOA 추정을 수행하는 성능 개선 알고리즘을 제시하였다. 또한 제안한 알고리즘을 검증하기 위해 소프트웨어 기반의 시뮬레이션 플랫폼을 구성하여 오차환경에 따른 DOA 추정 성능 분석을 수행하고, 본 논문에서 제시한 DOA 추정 알고리즘의 DOA 추정 정확도 및 분해능의 개선 정도를 분석하였다.

Keywords

References

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