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《JOURNAL OF NORTHERN JIAOTONG UNIVERSITY》 2000-05
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Study of detection on Railway Anti-Interference for Shift Frequency Signal

SUN Gang, CHENG Yin hang (College of Electronics and Information Engineering, Northern Jiaotong University, Beijing 100044,China)  
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.
【CateGory Index】: TN911.72
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