计算机应用与软件2013，Vol.30Issue(4)：29-32,4.DOI:10.3969/j.issn.1000-386x.2013.04.009
广义S变换在移频信号检测中的应用
APPLICATION OF GENERALISED S-TRANSFORM IN FREQUENCY-SHIFT SIGNAL DETECTION
摘要
Abstract
The detection of railway frequency-shift signal mainly adopts the time-frequency analysis methods including the short time Fourier transform, wavelet transform, Wigner-Ville distribution, generalised s-transform and so on at present, however they all have the limitations and shortages to certain extent. In light of the problems these methods have, in this paper we improve the window function on the basis of original generalised S transform, its complexity is simplified as well. By applying the improved algorithm in the detection of railway frequency-shift signal, it can overcome the shortcomings of conventional time-frequency analysis methods, thus can detect every frequency characteristic of the frequency-shift signals accurately, and reduces the detection deviation significantly. The improved algorithm has important guiding significance in further research on frequency-shift signal detection methods and the development of frequency-shift signal detector with high-precision.关键词
广义S变换/时频分析/移频信号/信号检测Key words
Generalised s-transform/ Time-frequency analysis/ Frequency-shift signal/ Signal detection分类
信息技术与安全科学引用本文复制引用
曾晓青,陈永刚,张睿兴..广义S变换在移频信号检测中的应用[J].计算机应用与软件,2013,30(4):29-32,4.基金项目
国家自然科学基金地区项目(61164101). （61164101）
