本文主要研究基于全相位快速傅里叶变换(All Phase Fast Fourier Transform,APFFT)的铁路信号频率检测算法.介绍铁路信号的基本概念,并对传统快速傅里叶变换与APFFT的理论基础进行深入分析.通过矩阵分析方法比较传统FFT和APFFT的性能差异.在实验分析部分,通过具体的数据模拟实验验证APFFT在频率检测方面相较于传统FFT的优势.针对铁路CPFSK(Continuous Phase Frequency Shift Keying)信号,提出基于APFFT的低频率和边缘频率检测技术.通过仿真实验验证所提方法的有效性.总结全相位FFT在铁路信号频率检测中的应用前景与研究价值.
Research on Railway Signal Frequency Detection Algorithm Based on Full-phase FFT
This paper mainly studies the railway signal frequency detection algorithm based on all phase fast Fourier transform(All Phase Fast Fourier Transform,APFFTT).Firstly,introduces the basic concept of railway signal,and deeply analyzes the theoretical basis of traditional fast Fourier transform and APFFT.Then,the performance differences between traditional FFT and APFFT are compared by matrix analysis method.In the experimental analysis part,the advantages of APFFT over traditional FFT in frequency detection are verified by specific data simulation experiments.Then,aiming at the railway CPFSK(Continuous Phase Frequency Shift Keying)signal,this paper proposes the low frequency and edge frequency detection technology based on APFFT.The effectiveness of the proposed method is verified by simulation experiments.Finally,summarizes the application prospect and research value of all phase FFT in railway signal frequency detection.
all phase fast fourier transformrailway signalfrequency detectionCPFSK signal
NETL
NSTL
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