The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Research on Performance Analysis for the Long Distance Air-Ground Wideband Common Data Link

장거리 공중-지상 채널환경에서 대용량 데이터링크의 수신성능 분석방법 연구

  • Ryu, Young-Jae (The 2nd R&D Institute, Agency for Defense Development, Department of Electric Information Telecommunication Engineering, Chungnam National University) ;
  • Ahn, Jae Min (Department of Electric Information Telecommunication Engineering, Chungnam National University)
  • Received : 2017.03.22
  • Accepted : 2017.04.05
  • Published : 2017.04.30
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Abstract

In this paper, we analyze the channel characteristics of the long distance air-ground wideband common data link and we propose a mathematical method to analyze the effect of narrowband and wideband interference of air-ground channel on the received signal of wideband data link. In this paper, we analyze the reception performance according to the communication distance using the proposed performance analysis method, and found out that the communication distance is limited by the narrowband and wideband interference of ground reflection wave. As a result of the performance analysis of the method of controlling the receiving antenna upward, not only the narrow band but also the wideband interference is effectively reduced, so that the communication distance is increased even in the existing wideband data link not including the equalizer.

본 논문은 장거리 공중-지상 가시선 링크에서 대용량 영상정보용 데이터링크의 무선채널 특성을 분석하고 공중-지상 채널의 협대역 및 광대역 간섭이 대용량 데이터링크의 수신 신호에 미치는 영향을 수학적으로 분석하는 방법을 제안한다. 제안된 성능분석 방법을 이용하여 통신거리에 따른 수신성능을 분석하였고 지면 반사파의 협대역 및 광대역 간섭에 의해 통신거리가 제한됨을 확인하였다. 또한 수신 안테나를 상향으로 제어하는 방법의 성능분석 결과, 협대역뿐만 아니라 광대역 간섭도 효과적으로 제거함으로써 별도의 등화기를 포함하지 않은 기존 대용량 데이터링크 장비로도 통신거리를 증가시킬 수 있음을 확인하였다.

Keywords

References

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