摘要
为了研制数字调制质量参数量值比对的传递标准,提出了一种基于星座图设计来实现对矢量信号发生器输出数字调制信号的调制误差进行准确设置的方法。给出了该方法的理论推导过程、实现方法,以及比对测量点的选取,最后通过测量实验,验证了所研制传递标准在比对测量点处的稳定性。
In order to develop transfer standard of digital modulation quality parameters, a new method is proposed to set the modulation errors of the output digital modulation signal from vector signal generator accurately based on constellation diagram designing. Theoretical derivation, implementation and measurement points for comparison are presented. Stability of the developed transfer standard is verified by the statistics of the experimental data.
出处
《计量学报》
CSCD
北大核心
2014年第3期263-267,共5页
Acta Metrologica Sinica
基金
基金项目:中国计量科学研究院专项业务费项目(ABD11)
关键词
计量学
数字调制误差
星座图
误差矢量幅度
比对
Metrology
Digital modulation errors
Constellation diagram
Error vector magnitude
Comparison