区域蒸发波导及微波路径损耗预报与验证

Shuwen Wang, Kunde Yang, Fan Yang, Yang Shi, Dawei Hu

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Evaporation duct plays an important role in electromagnetic wave propagation near the sea surface, and the prediction of regional evaporation duct and microwave path loss is very important for evaluating the performance of electromagnetic systems such as radar, communication and reconnaissance at sea. Firstly, based on Global Forecast System (GFS) prediction products and NAVSLaM evaporation duct prediction model, a large area evaporation duct prediction in the South China Sea is carried out in this paper. The reanalysis data of ERA5 published by European Centre for Medium-range Weather Forecasts (ECMWF) are compared. Then, combined with the parabolic equation model of electromagnetic wave propagation, the path loss prediction of microwave in evaporation duct channel is carried out. Finally, the prediction results are verified by the path loss test link in the northern part of the South China Sea. The verification results show that the path loss prediction in evaporation duct layer based on GFS data is in good agreement with the measured values, and in the first 24 hours, the error is less than 5−10 dB, which can be used to predict the path loss in large area evaporation duct layer. There is a large error between the forecast results and the measured data, which is caused by rainfall. When calculating electromagnetic wave propagation, the marine environment such as rain attenuation and rough sea surface should be fully considered.

投稿的翻译标题Prediction and verification of regional evaporation duct and microwave path loss
源语言繁体中文
页(从-至)206-213
页数8
期刊Dianbo Kexue Xuebao/Chinese Journal of Radio Science
37
2
DOI
出版状态已出版 - 4月 2022

关键词

  • ECMWF
  • Electromagnetic wave propagation
  • Evaporation duct
  • GFS data
  • NAVSLaM evaporation duct prediction model
  • Parabolic equation model

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