Generally, the harmonic phasereference circuit is a comb generator in frequency domain and a pulse generator in time domain.
谐波相位参考在频域上为梳状波而在时域上为很窄的脉冲序列。
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These signals provide an important reference of the gain of antenna, the time reference, the phasereference and the frequency of carrier wave for generating stimulant echo signal.
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