通过研究几种发射脉冲的一次反射和二次反射的接收波形以及它们的误码率特性，研究了信道多径失真对室内无线光通信的影响。
The paper researches the received waveform and the characteristic of BER in one refection and twice refection, studies the influence of multipath distortion on the transmitted pulse.
飞行器亦非唯一可发射破坏性电磁脉冲的运载工具。
Nor are aircraft the only vehicles from which destructive electromagnetic pulses can be launched.
很多后台运行的服务更新位置反而倾向于向发射塔发送脉冲以确认你是否定期的移动。
Many service that update location in the background instead tend to ping towers to see if you've moved periodically.
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