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

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Performance Analysis of Beamforming Satellite System Applying Circular Array Antenna

원형 형상 배열 안테나를 적용한 위성 빔형성 시스템 성능 분석

  • 김태윤 (조선대학교 전자공학과) ;
  • 황석승 (조선대학교 전자공학부)
  • Received : 2019.08.28
  • Accepted : 2019.10.15
  • Published : 2019.10.31
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Abstract

The main goal of Signal Intelligence (SIGNT) based on a satellite is to collect valid and accurate data without the topographical constraints, but, due to the characteristics of the satellite communication, the collected signals are greatly vulnerable to the influence of interference and jamming signals because their power are very low. Therefore, the high performance techniques of estimating the angle of arrivals (AOAs) of the collected signals and suppressing interference signals are required for collecting various signals on the ground employing the satellite. In addition, the high quality of the transmission beam-forming technique is required for accurately transmitting the collected information to a ground control center. In this paper, we present a beam-forming satellite system based on a circular array antenna, considering the above techniques, and evaluate and analysis the performance of the presented beam-forming system through the computer simulation. The circular array antenna structure is expected to effectively employ for the SIGINT system based on a satellite, because it is suitable to be installed in the satellite.

위성 기반의 신호정보수집(: Signal Intelligence, SIGINT)은 지형적인 제약사항 없이 정확한 데이터를 수집하는 것을 목적으로 하는데, 위성통신의 특성상 수집 신호의 전력이 매우 낮으며, 재밍을 포함한 간섭신호의 영향에 매우 취약하다. 따라서 위성을 사용하여 지상의 다양한 신호들을 수집하기 위해서는 높은 수준의 특정신호 도래각(: Angle-of-Arrival, AOA) 추정과 간섭제거 기술이 요구된다. 또한, 수집된 정보를 정확히 지상의 관제 센터에 전달하기 위해서는 높은 수준의 송신 빔형성(Beamforming) 기술이 필요하다. 본 논문에서는 이러한 기술들을 고려한 원형 형상 배열 안테나 기반의 빔형성 위성 시스템을 제시하고, 컴퓨터 시뮬레이션을 통해 시스템의 성능을 평가하고 분석한다. 원형 형상 배열 안테나 구조는 위성에 탑재하기 적합한 안테나 구조로써 위성 기반의 신호정보수집 시스템에 효율적으로 사용될 수 있을 것으로 판단된다.

Keywords

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