Discriminator: a device that converts a property of an input signal such as frequency or phase into an amplitude variation depending on how the signal differs from a standard or reference signal.

鉴别器，鉴频器：一种将输入信号的某一特征，如频率或相位转变为幅度变化装置，其变化大小因信号与标准或参考信号的不同程度而异。

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Microwave phase discriminator (MPD) is used to translate the phase information to amplitude information which easy to be processed by the theory of phase interference.

微波鉴相器建立在相位干涉的原理之上，通过相位干涉把相位信息转化成便于处理的幅度信息。

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