【摘要】 时域分析和傅氏变换的频域分析方法是现代铁路信号检测的主要方法之一 .随着铁路的发展 ,需要更多的信息量和更加有效的铁路信号检测方法 ,以满足铁路运输安全和高效率的需要 .近年来 ,现代频域分析已有很大的进展 ,出现许多新的信号分析处理方法 ,特别是小波和高阶谱分析的发展 ,已能分别对非平稳和非高斯信号进行有效地分析处理 .本文尝试采用小波变换对铁路移频信号进行分析 ,在分析时考虑交流干扰 ,得到铁路移频信号的完整参数 ,并给出仿真结果更多还原

【Abstract】 Fourier transformation in time domain and frequency domain is one of the main methods for modern railway signal detection. With the development of Chinese railway, more information and more effective signal detection methods are needed , so as to meet the requirement of railway transportation safety and efficiency. At present, many new signal analyses and processing methods emerge in modern frequency analysis field; especially, wavelet analysis and high order spectrum analysis make the process of non stationary signal and non Gauss signal effective respectively. In this paper, the analysis method of frequency shift signal by wavelet transformation is proposed; AC interference is considered and all the parameters of the original signal are obtained. A simulation sample is presented at the end.更多还原