›› 2010, Vol. 23 ›› Issue (3): 65-.

• 论文 • 上一篇    下一篇



  1. (1西安邮电学院 电子信息工程系,陕西 西安710061;2西安工业大学 电子信息工程学院,陕西 西安710032)
  • 出版日期:2010-03-15 发布日期:2010-05-12
  • 通讯作者: 袁薇(1976-),女,硕士,讲师。研究方向:信息处理研究。
  • 作者简介:袁薇(1976-),女,硕士,讲师。研究方向:信息处理研究。

Application of Underrate Sampling and ZOOMFFT in Frequency Shift Detection

Yuan Wei1,Sun Jingfeng2,Fan Wenxia2   

  1. (1Department of Electronic Information Engineering,Xian University of Post and Telecommunications,Xian 710061,China; 2College of Electric Information Engineering,Xian Technological University,Xian 710032,China)
  • Online:2010-03-15 Published:2010-05-12



关键词: 移频信号, 欠采样, ZOOM-FFT, 频率分辨率, Matlab仿真


Frequencyshift keying signal detection needs a relatively high frequency resolution.With the limit to the detection equipment memory and FFT calculated length in the detection algorithm,the useful frequency band needs to be selected and partially analyzed if we want to obtain a higher frequency resolution.This paper combines the underrate sampling technology and the spectrum refining technology,and simulates and verifies the detection algorithm of the homemade 18 information track circuit frequency shift signal based on the software Matlab.The simulation shows that the detection algorithm is totally feasible.This offers a method of direction for designing the track circuit frequency shift signal detection instruments.

Key words: frequencyshift signal;underrate sampling;ZOOMFFT;frequency resolution;Matlab simulation


  • TN91172