최근 이동형 글로벌 광대역 통신 및 위성기반의 양방향 인터넷 서비스에 대한 수요가 증가함에 따라 ESIM(Earth Station in Motion)이라는 새로운 형태의 위성 터미널이 개발되고 있다. 이 시스템은 ITU-R Resolution 158(WRC-15)에서 FSS(Fixed Satellite Service) 업링크에 27.5-29.5 GHz 대역사용을 고려하고 있어 동일 대역에 이미 분배된 FS와의 간섭분석에 대한 연구가 요구되고 있다. 이에 본 논문에서는 FS(Fixed Service) 무선국 방향으로 보어사이트를 향하는 ESIM의 방위각을 일양분포의 랜덤특성을 고려하여 FS 수신안테나의 -10 dB 빔폭 내의 평균 수신전력 및 간섭기준 초과확률에 대해 이론해석과 시뮬레이션 분석을 수행하였다. 그 결과 이론해석의 타당성을 보여주며, 동일 대역의 FS를 보호하기 위해서는 ESIM 이동 터미널의 보어사이트에 대한 이동경로 기울기 각도, 운영시간, 이동속도 등을 종합적으로 고려해서 간섭기준이 마련되어야 한다.
KSP Keywords
9.5 GHZ, Earth station, Fixed Satellite(FS), Fixed Satellite Service, Fixed Service, International telecommunications union radiocommunication(ITU-R)
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