摘要
监测射频信号的实时变化并对其进行分析和测量,对优化信号频谱利用效率具有关键作用。实时频谱分析仪利用数字荧光分析技术实现对时变信号观察、测量和分析,成为了监测瞬变信号的重要手段。介绍了实时频谱分析仪的基本技术原理,研究并提出了实时分析带宽和全捕获最小脉宽幅度比的校准方法。根据实时频谱分析仪的主要功能特点,对实时分析带宽、全捕获最小脉宽幅度比的校准方法进行了实验验证,并对其进行了不确定度分析和评定。
Monitoring, analyzing, and measuring the real-time change of radio frequency(RF) signal plays a key role in optimizing signal spectrum efficiency. Real-time spectrum analyzers use digital fluorescence analysis technology to observe,measure and analyze time-varying signals, which have become an important means to monitor transient signals. In this paper, the key technical principle of the real-time spectrum analyzer is introduced, and the calibration methods for real-time bandwidth analysis and full-capture minimum pulse width-amplitude ratio are studied and proposed. According to the main functional characteristics of the real-time spectrum analyzer, the calibration methods of real-time bandwidth analysis and full-capture minimum pulse width-amplitude ratio are experimentally verified, and the uncertainty analysis and evaluation are carried out.
作者
聂梅宁
李兰兰
高鸿莹
田飞
张子龙
何昭
NIE Meining;LI Lanlan;GAO Hongying;TIAN Fei;ZHANG Zilong;HE Zhao(National Institute of Metrology,Beijing 100029,China)
出处
《计量科学与技术》
2022年第7期13-17,27,共6页
Metrology Science and Technology
关键词
射频信号
实时频谱分析仪
实时分析带宽
全捕获最小脉宽幅度比
校准方法
radio frequency signal
real-time spectrum analyzer
real-time bandwidth analysis
full-capture minimum pulse width-amplitude ratio
calibration method