한국항행학회논문지 (Journal of Advanced Navigation Technology)

  • 제20권6호
  • /
  • Pages.503-510
  • /
  • 2016
  • /
  • 1226-9026(pISSN)
  • /
  • 2288-842X(eISSN)
한국항행학회 (The Korean Navigation Institute)
권호 표지
DOI QR코드

DOI QR Code

안테나 포인팅 에러를 고려한 ESIM이 FS 시스템에 미치는 간섭 영향 분석

Analysis of Interference Effect of ESIM on FS System Considering the Antenna Pointing Error

  • 강영흥 (군산대학교 컴퓨터정보통신공학부) ;
  • 오대섭 (한국전자통신연구원 위성항공ICT연구부)
  • Kang, Young-Houng (School of Computer, Information and Communication Engineering, Kunsan University) ;
  • Oh, Dae-Sub (Aerospace ICT Research Department, ETRI)
  • 투고 : 2016.11.25
  • 심사 : 2016.12.28
  • 발행 : 2016.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

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 서비스는 ITU-R Resolution 158(WRC-15)에서 FSS 업링크에 27.5-29.5 GHz 대역사용을 고려하고 있어 동일대역에서 1순위 업무로 분배된 FS와의 간섭분석에 대한 연구가 요구되고 있다. 이에 본 논문에서는 ESIM이 기존의 FS(fixed service)에 미치는 간섭영향을 안테나의 포인팅 에러와 방위각을 고려하여 4 가지 시나리오에 대해 분석하였다. 그 결과 에러 초과확률 5% 및 10% 기준에서 앙각이 $20^{\circ}{\sim}40^{\circ}$에 따라 두 시스템간의 분리거리는 32~52 km 정도 요구되고 있다. 이에 분리거리를 최소화하면서 동일대역의 FS를 보호하기 위해서는 안테나 포인팅 에러뿐만 아니라 이동 터미널의 방위각을 제어할 수 있어야 한다.

In recent years, owing to the growing user demand for the two-way internet service based on the move global broadband communications, a new type of satellite terminal has developed, known as earth station in motion (ESIM). This service was required by Resolution 158 (WRC-15) to study on the coexistence with the co-primary fixed service (FS) in 27.5-29.5 GHz as a FSS uplink. In this paper, four scenarios was introduced to account for the antenna pointing error and the azimuth for an analysis on the sharing between ESIM and FS. From analysis results, the required separation distance between two systems should be about 32~52 km according to the elevation angles of $20^{\circ}{\sim}40^{\circ}$ using thresholds of 5% and 10% outage probability. Therefore, it is necessary to control the azimuth angle due to a moving terminal as well as the pointing error of ESIM to minimize the required separation distance and to protect the co-primary FS.

키워드

참고문헌

  1. E. G. Cuevas and C. V. Weerackody, "Technical characteristics and regulatory challenges of communications satellite earth stations on moving platforms," Johns Hopkins APL Technical Digest, Vol. 33, No. 1, pp. 37-51, 2015.
  2. International Telecommunication Union, Methodologies to estimate the off-axis e.i.r.p. density levels and to assess the interference towards adjacent satellites resulting from pointing errors of vehicle-mounted earth stations in the 14 GHz frequency band, Recommendation ITU-R S.1857, Jan. 2010.
  3. International Telecommunication Union, Technical and operational requirements for GSO FSS earth stations on mobile platforms in bands from 17.3 to 30.0 GHz, Report ITU-R S.2223, Oct. 2011.
  4. International Telecommunication Union, Technical and operational guidelines for earth stations on mobile platforms communicating with geostationary space stations in the fixed-satellite service in the frequency bands 19.7-20.2 GHz and 29.5-30 GHz, Report ITU-R S.2357-0, June 2015.
  5. F. Guidolin, M. Nekovee, L. Badia, and M. Zorzi, "A study on the coexistence of fixed satellite service and cellular networks in a mmWave scenario," in IEEE ICC 2015 Wireless Communication Symposium, London: UK, pp. 2444-2449, June 2015.
  6. International Telecommunication Union, Determination of the interference potential between earth stations of the fixed-satellite service and stations in the fixed service, Recommendation ITU-R SF.1006, 1993.
  7. International Telecommunication Union, Methodology to evaluate the impact of space-to-Earth interference from the fixed-satellite service to the fixed service in frequency bands where precipitation is the predominant fade mechanism, Recommendation ITU-R SF.1572, May 2002.
  8. International Telecommunication Union, Prediction procedure for the evaluation of interference between stations on the surface of the Earth at frequencies above about 0.1 GHz, Recommendation ITU-R P.452-16, July 2015.
  9. International Telecommunication Union, Maximum permissible levels of off-axis e.i.r.p. density from earth stations in geostationary-satellite orbit networks operating in the fixed-satellite service transmitting in the 6 GHz, 13 GHz, and 30 GHz frequency bands, Recommendation ITU-R S.524-9, April 2006.
  10. International Telecommunication Union, Propagation by diffraction, Recommendation ITU-R P.526-13, Nov. 2013.
  11. International Telecommunication Union, Attenuation by atmospheric gases, Recommendation ITU-R P.676-11, Sep. 2016.
  12. International Telecommunication Union, Reference radiation patterns for fixed wireless system antennas for use in coordination studies and interference assesment in the frequency range from 100 MHz to about 70 GHz, Recommendation ITU-R P.699-7, April 2006.