... 接收数据指示 received data present 接收衰减 receiving attenuation 接收台 receiving station ...
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标准上给出的归一化场地衰减（NSA）理论值的计算是基于发射和接收偶极子天线无限细这个假设得出的。
The theoretical NSA values given by the standards are grounded on the assumption that transmit and receive antennas are infinitesimal dipole antennas which is inappropriate to measurements.
FTF算法可以自适应地跟踪接收机输入信号的幅度衰减，做出实时地估计。
The receiver with FTF adaptive filters can track the amplitude of received signal to form a real-time amplitude estimation.
根据产生接收信号振幅变化的不同物理机制，提出产生信号振幅变化的几何衰减和物理衰减两个不同的概念。
Two new concepts, geometry attenuation and physics attenuation, are presented according to different physics mechanisms of the amplitude variations in received signals.
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