Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Measurement of RF Environment for CubeSat Ground Stations in Korea

국내 큐브위성 지상국 전파환경 측정

  • Received : 2022.08.10
  • Accepted : 2022.11.10
  • Published : 2022.12.31
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Abstract

This study measured the radio environment of 10 domestic institutions with CubeSat ground stations for 24 hours in three frequency bands (VHF/UHF/S-band) allocated by the International Telecommunication Union (ITU). The impact of the RF environment around the ground stations on CubeSat downlink frequencies was analysed and compared with acceptable interference noise requirements from the CubeSat RF link. The findings indicate that not only the selection of downlink frequency but also the configuration of RF communication link design and ground station system of CubeSat should consider the S-band RF environment around the ground station due to the presence of several wireless devices.

큐브위성 관제를 위해 국제전기통신연합(ITU, International Telecommunication Union)에서 할당하고 있는 아마추어 주파수 가운데 3개의 주파수 대역(VHF/UHF/S-band)에 대하여, 큐브위성 지상국을 보유하고 있는 국내 10개 기관 사이트의 전파환경을 24시간 동안 각각 측정하였다. 측정된 결과를 바탕으로 큐브위성의 하향 교신주파수에서의 지상국 주변 전파잡음과 큐브위성 RF 통신링크에서 허용가능한 지상국 주변의 간섭잡음 요구조건을 비교하여 영향성을 분석하였다. 분석 결과 S 대역 환경은 다양한 무선 기기의 주파수가 혼재되어 사용되므로 지상국 주변 전파환경을 고려하여 큐브위성의 하향 교신주파수를 선정하여야 하고 아울러 RF 통신링크 설계나 지상국 시스템을 구성하여야 함을 확인하였다.

Keywords

Acknowledgement

본 논문은 기상청(국가기상위성센터) 천리안위성 2A호 기상업무를 위한 관제사업의 지원으로 수행되었다.

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