测控技术2012，Vol.31Issue(5)：81-84,88,5.
基于FFT频谱校正的移频信号检测算法的研究
Investigation for the Algorithm of Frequency-Shift Signal Based on FFT Spectrum Correction
王安 1焦美鹏 1罗世刚1
作者信息
- 1. 西北工业大学自动化学院,陕西西安710129
- 折叠
摘要
Abstract
The train traffic safety is directly influenced by the status of track circuit frequency-shift signal. In order to accurately detect the parameters of track circuit frequency-shift signal with high precision, a spectrum correction algorithm based on fast Fourier transform (FFT) is proposed through the spectrum correction of Han-ning window and undersampling technique. The results of computer simulation for such algorithm under Matlab show that the detected values of each parameter would fulfill the requirement of the error, and the sampling time could be shortened to 1. 6 s (or 2 s). In fact, this algorithm provides the theoretical background for studying the real-time parameter collector of frequency-shift signal.关键词
移频信号/FFT/频谱校正/仿真Key words
frequency-shift signal/ FFT/ spectrum correction/ simulation分类
信息技术与安全科学引用本文复制引用
王安,焦美鹏,罗世刚..基于FFT频谱校正的移频信号检测算法的研究[J].测控技术,2012,31(5):81-84,88,5.
