한국항행학회논문지 (Journal of Advanced Navigation Technology)

  • 제20권5호
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  • Pages.417-424
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  • 2016
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  • 1226-9026(pISSN)
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  • 2288-842X(eISSN)
한국항행학회 (The Korean Navigation Institute)
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SDCM의 국내 적용 및 성능 평가를 통한 다중 위성군 SBAS의 효과 예측

Prediction on the Effect of Multi-Constellation SBAS by the Application of SDCM in Korea and Its Performance Evaluation

  • 임철순 (세종대학교 항공우주공학과) ;
  • 석효정 (세종대학교 항공우주공학과) ;
  • 황호연 (세종대학교 항공우주공학과) ;
  • 박병운 (세종대학교 항공우주공학과)
  • 투고 : 2016.09.28
  • 심사 : 2016.10.20
  • 발행 : 2016.10.30
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⟨ 이전 논문 다음 논문 ⟩

초록

러시아는 자국 내 위성기반 보강시스템의 서비스 제공을 위하여 최근 정지궤도 위성을 통하여 SDCM 신호를 송출하기 시작하였다. SDCM용 정지궤도 위성인 LUCH-5A와 LUCH-5B의 영향권에 포함되어 있는 한반도에서도 현재 테스트 중인 PRN (pseudo random number) 140번 메시지가 수신되고 있어 국내 SDCM의 적용 및 그 성능 분석이 가능하다. 본 논문에서는 수신된 SDCM 메시지를 남한 지역의 최북단에 위치한 국토지리정보원 철원 기준국에 적용하였고, 이를 통해 수평 0.8749 m, 수직 0.9589 m (RMS)으로 그 성능이 크게 향상됨을 확인하였다. 또한 GPS와 GLONASS를 동시에 보강하는 SDCM의 특성을 반영하여 분석한 결과, 다중 위성군의 SBAS가 GPS 단독 SBAS에 비해 보호수준은 약 30 % 감소시킴으로써, APV-I 가용성 증대에 기여함을 확인하였다. 이를 통해 다중 위성군의 SBAS가 국내 개발될 KASS 시스템의 성능 향상에 기여할 수 있음을 예측할 수 있다.

Russia recently began broadcasting the SDCM signal in order to provide SBAS service for the civil aviation in the Russian territory using its own geostationary satellites. The service coverage of the SDCM geostationary satellite, LUCH-5A and LUCH-5B, includes Korea peninsula, where the test signal from the pseudo random number (PRN) 140 is received. This paper shows that the position accuracy at the Chulwon GNSS site is improved to 0.8749 m (horizontal) and 0.9589 mm (vertical) by applying the received SDCM message to the RINEX data. Considering that the SDCM augments both GPS and GLONASS, the performance of multi-constellation SBAS was compared to that of GPS-only SBAS, and APV-I availability was improved by decreasing the protection level about 30 %. From the results, we can expect that the mult-constellation SBAS can contribute to the performance enhancement of the future KASS.

키워드

참고문헌

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피인용 문헌

  1. Improvement of UAV Positioning Performance Based on EGNOS+SDCM Solution vol.13, pp.13, 2016, https://doi.org/10.3390/rs13132597
  2. Designation of the Quality of EGNOS+SDCM Satellite Positioning in the Approach to Landing Procedure vol.12, pp.3, 2016, https://doi.org/10.3390/app12031335