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本文对非电量电测中所得信号的处理,提出了在频域进行平均的方法,论述了当基本信号起点不一致时,时域平均将带来信号的畸变和较大的误差,而频域平均却使基本信号的频谱特性得以保持,干扰的强度也被大大削弱。这种频域平均所带来的基本信号时域位置的变化是不关紧要的,被削弱了的干扰在相位上的改变所带来的影响也可忽略,从而使基本信号更加标准化。
This paper presents the method of averaging in the frequency domain for the signal processing in non-electric power measurement. It discusses that when the starting signals of the basic signals are inconsistent, the average of the time domain will bring about signal distortion and large error, while the average of the frequency domain But to maintain the basic spectral characteristics of the signal, the intensity of interference has also been greatly weakened. The change in the time domain position of the basic signal due to this frequency domain averaging is irrelevant and the influence of the weakened interference on the phase change is negligible so that the basic signal is more standardized.