Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Comparison of propagation models based on DTV field strength measurement in urban environment

대도심 DTV 전계강도 측정에 기반한 전파예측 모델 비교

  • Kang, Young-Heung (Dept. of Information & Telecommunication Eng, Kunsan National Univ.) ;
  • Kwon, Yong-Ki (National Radio Research Agency, Advanced ICT Research Team) ;
  • Kim, Hyeong-Seob (National Radio Research Agency, Advanced ICT Research Team)
  • 강영흥 (군산대학교 정보통신공학과) ;
  • 권용기 (국립전파연구원 미래전파연구팀) ;
  • 김형섭 (국립전파연구원 미래전파연구팀)
  • Received : 2013.08.19
  • Accepted : 2013.10.30
  • Published : 2013.10.30
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Abstract

With the rapid development of wireless communication at VHF and UHF bands, there is an increasing need for the reliable propagation prediction tools. Therefore, the different propagation models that have been developed in many countries as well as korea has been trying to secure a model suitable for their geographical area but then it is giving us a different result when we compared it to measured values. In this paper, based on the measurements of DTV broadcasting services in domestic urban area, analysis and comparison of ITU-R P.1546 and BCAST models provide errors between measured and predicted values, and some points for improving SMI system has been proposed. As a result, P.1546 model provides the valid predicted data similar to measured data, but BCAST model has some problems of large deviation and higher prediction to measured data. In future, these problems and diffractions due to high buildings need to be studied further.

VHF 및 UHF 대역에서 무선통신의 급격한 발전에 따라 신뢰할 만한 전파예측 기법에 대한 요구가 증가하고 있다. 따라서 국내뿐만 아니라 세계 각국에서는 자국의 환경에 맞는 전파모델을 확보하려고 노력하고 있고, 많은 모델이 개발되어 전파분석에 이용되어 왔지만, 아직도 측정결과와 상이한 결과를 제공하고 있다. 이에 본 연구에서는 국내 대도심지역의 DTV 방송서비스 방송 주파수에 대해 측정한 후, 측정된 데이터와 전파자원분석시스템(SMIS)내의 예측모델 P.1546 및 BCAST에 대한 실측/예측 비교분석 및 이의 오차 분석을 수행하여 SMIS 향후 개선방안을 제시한다. P.1546 및 BCAST 모델적용에 있어 실측/예측 오차, 특히 BCAST 모델인 경우 상하로 큰 오차를 보이는 문제점 등이 도출되어 고층건물에 의한 회절손실 등에 대한 면밀한 분석이 향후 필요하다.

Keywords

References

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Cited by

  1. 국내 Rural 전파환경에서의 DTV 전계강도 예측모델 분석 vol.17, pp.6, 2013, https://doi.org/10.12673/jkoni.2013.17.6.638