叙述了短期频率稳定度、相位噪声的基本概念和重要性、在时域和频域中的表达方法以及各种相位噪声的测量方法,并且分别比较了各种方法间的优缺点。指出了在高频雷达发射信号相位噪声的测量,特别是近载频低相位噪声的测量。指出在高频雷达发射信号相位噪声测量中应注意的问题,并对影响高频雷达发射信号相位噪声测量的因素进行了分析。

This paper introduces the basic concepts and importance of short-term frequency stability and phase noise,its expression in time domain and in frequency domain,the methods of measurements of phase noise and compares their advantages and disadvantages respectively.It introduces the phase noise measurement method of HF radar's transmitting signal,especially the measurement method of low phase noise which is close-in to carrier frequency.It also presents the items that should be pay attention to when we make the measurement,and analyses the factors that influence the phase noise measurement.

TN957.54