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本文分析了影响频率稳定度的噪声特性。着重讨论了频率稳定度的各种常用的频域意义和时域意义,以及它们之间的互译。阿仑方差实际测量的估算精度也作了分析。从研究振荡器的噪声统计特性考虑,似乎“带通方差”更为实用。
This article analyzes the noise characteristics that affect frequency stability. The commonly used frequency and time domain significance of frequency stability and the mutual translation between them are discussed. The accuracy of the actual measurement of the Allan variance is also analyzed. From the study of the oscillator’s noise statistics, it seems that the “pass-band variance” is more practical.