Heterodyne frequency measurement method based on virtual instrument

被引：0
|
作者：
Li, Xiaohui [1 ]
Liu, Ya [1 ,2 ]
Wang, Danni [1 ]
Bian, Yujing [1 ]
Liu, Ya [1 ,2 ]
机构：
[1] Chinese Acad Sci, Nation Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100000, Peoples R China
来源：
PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM-JOINTLY WITH THE 21ST EUROPEAN FREQUENCY AND TIME FORUM, VOLS 1-4 | 2007年
关键词：
frequency; measurement; virtual instrument;
D O I：
10.1109/FREQ.2007.4319067
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The heterodyne method is one of main methods in high precision frequency measurement. In the traditional heterodyne method, the counter is used to measure the square wave of beat signal. This method is inconvenient to the multichannel measurement and real-time display of measurement results. In this paper, based on the technique of virtual instruments, the traditional heterodyne method is improved. The Analog Digital Converter and computer are used to replace counter. The sine wave of beat signal is converted into digital signal with ADC. The digital signal will be analyze by computer, its frequency calculated by the digital signal processing. This method is convenient for the multi-channel measurement and the real-time display of measure results. This method compared with the traditional heterodyne method, it is better than the traditional method in accuracy.
引用
收藏
页码：220 / +
页数：2
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