V2EX rain fade

Rain Fade

释义 Definition(中文)

rain fade 指“雨衰”:因降雨(以及云、湿雪等)对微波/毫米波无线电信号的吸收与散射,导致卫星通信、微波链路或高频无线网络的信号强度下降、误码率上升,甚至短时中断的现象。(常见于 Ku/Ka 等较高频段)

发音 Pronunciation(IPA)

/ren fed/

例句 Examples

Rain fade can disrupt satellite TV during heavy storms.
暴雨时,雨衰可能会干扰卫星电视信号。

Engineers added extra link margin to reduce outages caused by rain fade in the Ka-band.
工程师增加了链路余量,以减少 Ka 频段雨衰导致的中断。

词源 Etymology(中文)

这是一个现代工程术语,由 rain(雨)+ fade(衰减/变弱) 组合而成:形象地表示“因为下雨,信号‘变淡’了”。在卫星通信与微波通信领域中广泛使用。

相关词 Related Words

文学/作品用例 Literary & Notable Works(中文)

由于 rain fade 属于技术术语,它更常见于通信工程与标准文献中,例如:

  • Satellite Communications(Dennis Roddy)
  • Digital Communication(John R. Barry, Edward A. Lee, David G. Messerschmitt)
  • ITU-R 传播与降雨衰减相关建议书(如关于雨衰预测与链路设计的技术文件)
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