The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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A Study on Optimization of Single-Channel Monopulse Tracking System using Phased Array Antenna

위상배열안테나를 이용한 단일 채널 모노펄스 추적 시스템의 최적화에 관한 연구

  • Jung, Jin-Woo (Dept. of electronics and Computer Engineering, Chonnam National University)
  • 정진우 (전남대학교 전자컴퓨터공학과)
  • Received : 2018.05.14
  • Accepted : 2018.08.15
  • Published : 2018.08.31
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Abstract

The radiation characteristics of a phased array antenna is changed according to the beam steering angle. The monopulse tracking system calculates the prediction angle using the radiation characteristics of antenna. Therefore, the monopulse ratio curve is changed according to the beam steering angle for the monopulse tracking system using a phase array antenna, and the tracking accuracy goes down. In the case of a single-channel monopulse system, the monopulse rate curve is controlled by the configuration variables of the system. In this paper, a simplified formula was presented for adaptive control of monopulse system configuration variables on beam steering angle. The presented formula can induce a uniform monopulse ratio curve for the beam steering angle as well as the phased array antenna design parameters.

위상배열안테나는 빔 조향 각도에 따라 방사 특성이 변화한다. 모노펄스 추적 시스템은 합 및 차신호의 방사특성을 기반으로 추정 각을 산출하는 시스템이다. 따라서 위상배열안테나를 이용한 모노펄스 추적 시스템의 경우, 빔 조향 각도에 따라 모노펄스 비율 곡선이 변화하기 때문에 추적정확도가 낮아지는 문제가 발생한다. 단일 채널 모노펄스 시스템의 경우, 시스템 구성 변수의 변화를 통해 모노펄스 비율 곡선이 제어된다. 본 논문에서는 빔 조향 각도에 모노펄스 시스템 구성 변수를 적응형으로 제어하는데 참조할 수 있는 간소화된 수식을 제시하였다. 제시된 수식은 빔 조향 각도뿐만 아니라 방사 특성에 영향을 주는 위상배열안테나 설계 변수에 대응하여 균일한 모노펄스 비율 곡선을 유도할 수 있다.

Keywords

References

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