指點信標天線 的英文怎麼說

中文拼音 [zhǐdiǎnxìnbiāotiānxiàn]
指點信標天線 英文
marker antenna
  • : 指構詞成分。
  • : Ⅰ名詞1 (液體的小滴) drop (of liquid) 2 (細小的痕跡) spot; dot; speck 3 (漢字的筆畫「、」)...
  • : Ⅰ名詞1 [書面語] (樹梢) treetop; the tip of a tree2 (枝節或表面) symptom; outside appearance; ...
  • : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
  • 指點 : give directions; show how
  1. Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section

    在第三章介紹無光接入系統的光收發單元,採用多孔徑卡塞格倫式的收發對消除減小大氣湍流影響有較大作用,針對大氣通道的特光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通的技術,同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等,最後給出了一個整個傳送鏈路的功率預算。
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