| ZOOM-FFT在检测轨道电路移频信号参数研究中的误区 |
| |
| 引用本文： | 王安,熊信民.ZOOM-FFT在检测轨道电路移频信号参数研究中的误区[J].铁路计算机应用,2011,20(9):47-50. |
| |
| 作者姓名： | 王安 熊信民 |
| |
| 作者单位： | 西北工业大学 自动化学院,西安,710129 |
| |
| 摘 要： | 本文在分析移频信号的频谱特点的基础上,通过MATLAB仿真发现,用ZOOM-FFT方法提高频率分辨率是有前提条件的,该方法需要较长的采样时间,而这不能满足测试仪表实时性要求.并指出了ZOOM-FFT在检测轨道电路移频信号参数研究中的误区.
|
| 关 键 词： | 移频信号 ZOOM-FFT 频率分辨率 MATLAB |
| 收稿时间： | 2011-09-15 |
Misunderstanding of research on detecting parameters of frequency-shift signaling in track circuit using ZOOM-FFT |
| |
| WANG An,XIONG Xin-min.Misunderstanding of research on detecting parameters of frequency-shift signaling in track circuit using ZOOM-FFT[J].Railway Computer Application,2011,20(9):47-50. |
| |
| Authors: | WANG An XIONG Xin-min |
| |
| Institution: | WANG An,XIONG Xin-min(School of Automation,Northwestern Polytechnical University,Xi'an 710129,China) |
| |
| Abstract: | This paper analyzed the characteristic of frequency-shift signaling.Through the simulation of MATLAB,it was found that it was of prerequisite to improve the frequency resolution by ZOOM-FFT,it needed more sampling time,and could not meet the real-time needs of testing instrumentation.The paper pointed out the misunderstanding of research on detecting the parameters of frequency-shift signaling in track circuit using ZOOM-FFT. |
| |
| Keywords: | frequency-shift signaling ZOOM-FFT frequency resolution MATLAB |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《铁路计算机应用》浏览原始摘要信息 |
| 点击此处可从《铁路计算机应用》下载免费的PDF全文 |
