网络延时是向目的地发送请求到目的地实际接收到数据包之间的时间间隔。
The network latency is the time between sending a request to a destination and the destination actually receiving the sent packet.
用户实际上可以在任何时间地点以任何方式接收信息。
Essentially, users can receive information how, when and where they need it.
基于孔径接收的对数振幅时间相关函数，结合星地激光下行链路的实际情况，推导了适用于星地下行孔径接收的闪烁频谱表达式。
Based on the temporal covariance of logarithmic amplitude, analytical expression was obtained for aperture receiving power spectrum of atmospheric scintillation of satellite-to-ground downlink.
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