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针对铁路移频信号的信息特点,提出了利用小波脊线技术分析移频信号信息特征的具体方法。该方法可以快速、准确地计算出移频信号的瞬时频率和信号包络,并根据所得出的瞬时频率推算出相应的调制低频信息,为铁路移频和UM71信号的分析和译码提供了一个新的方案。
According to the information characteristics of railway frequency shift signal, a method of using wavelet ridge technology to analyze the information characteristics of frequency shift signal is proposed. The method can calculate the instantaneous frequency and signal envelope of the frequency-shifted signal quickly and accurately and deduce the corresponding modulated low-frequency information according to the obtained instantaneous frequency so as to provide one for the railway frequency-shifting and UM71 signal analysis and decoding New program.