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众所周知,利用具有平方律输出指示器的接收机进行测量时,下式成立P=G(?)f_3 (1)式中:G 是接收机输入端噪音功率的过剩谱密度;P 是指示器上给出相同读数的正弦信
It is well known that when using a receiver with a square law output indicator for the measurement, the following holds: P = G (?) F_3 (1) where: G is the excess spectral density of the noise power at the receiver input; P is the indicator Give a sinusoidal letter of the same reading