Observed Over-the-Horizon Propagation Characteristics and Evaporation Duct Inversion during the Entire Process of Tropical Cyclone Mulan (202207)

Shuwen Wang, Kunde Yang, Yang Shi, Fan Yang, Hao Zhang

科研成果: 期刊稿件文章同行评审

12 引用 (Scopus)

摘要

An evaporation duct, which often occurs in the air-sea boundary layer, has a considerable impact on the remote sensing detection capability of electromagnetic (EM) systems. Tropical cyclones (TCs) substantially increase the transfer of water vapor and heat in the air-sea boundary and inevitably affect EM propagation environments; however, observations of duct environments and their effects on EM propagation during a TC process have seldom been reported. In this article, X-band EM propagation systems that can operate continuously in the TC environment were specially developed, and observations of multiple over-the-horizon propagation links during TC Mulan (202207) were presented. The path loss (PL) of five links and the surface variations both in Mulan's area of high wind speed (WS) and eye were recorded. The average PL of a 53-km link was approximately 155 dB in the high WS area, while a 30 dB increase in PL was detected in Mulan's eye. The inversion and simulation results show that the evaporation duct height (EDH) was high in the high WS area, which led to low PL in EM propagation; conversely, EDH was low inside Mulan's eye, resulting in high PL.

源语言英语
页(从-至)5322-5334
页数13
期刊IEEE Transactions on Antennas and Propagation
71
6
DOI
出版状态已出版 - 1 6月 2023

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