The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Adaptive Nulling Algorithm to Reduce the Main-Beam Distortion in Single-Port Phased Array Antenna

단일포트 위상배열안테나에서 주빔 왜곡 현상을 줄이기 위한 적응형 널링 알고리즘

  • Seo, Jongwoo (The 2nd Research and Development Institute, Agency for Defense Development) ;
  • Park, Dongchul (Department of Radio & Information Communication Engineering, Chungnam National University)
  • 서종우 (국방과학연구소 제2기술연구본부) ;
  • 박동철 (충남대학교 전파정보통신공학과)
  • Received : 2016.07.25
  • Accepted : 2016.09.10
  • Published : 2016.10.07
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Abstract

In this paper, a new technique and cost function which can be to classify jamming signal and target signal from the spectral distribution of received signal in order to minimize the main beam distortion of target signal and to form nulls in the direction of jamming signal in array antennas of single port system is proposed. The proposed cost function is applied to the adaptive algorithm which has the fast convergence and stable nulling performance through the combination of the PSO(Particle Swam Optimization) algorithm and the gradient-based perturbation algorithm, which shows stable nulling performance adaptively even under the moving jamming signal where the incident direction of the jamming signal is changing with time.

본 논문에서는 단일포트시스템으로 설계된 배열안테나에서 수신신호의 스펙트럼 분포로부터 목표신호와 재밍신호를 분리하여 목표신호 방향의 주빔 왜곡을 최소화 하며, 재밍신호 방향으로 패턴 널(null)을 형성하는 새로운 기법 및 비용함수를 제안한다. 제안한 비용함수는 최적화 알고리즘의 한 종류인 PSO(Particle Swam Optimization) 알고리즘과 gradient-based 섭동 알고리즘을 혼합한 적응형 알고리즘에 적용하여 시간에 따라 재밍신호의 입사방향이 변화하는 이동형 재밍환경에서도 적응적으로 안정적인 널링 성능을 가진다.

Keywords

References

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