... loop oscillograph 回线示波器 loop phase characteristic 环路相位特性 loop phase locking 环路相位锁定 ...
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Because of the fading characteristic in troposcatter channel, the mechanism of traditional phase locked loop is difficult to achieve the effect in troposcatter communication.
由于对流层散射信道存在严重的衰落现象，故而传统的锁相环机制在散射通信中往往难以奏效。
Then we briefly explain the basic theory of Phase Locked Loop (PLL) and the basic characteristic of its components.
然后从相位角度分析了锁相环环路模型，给出了相位传递函数；
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