摘要
最大熵法(MEM)是一种常用的现代谱估计法,它与经典谱估计法相比,分辨率比较高.UM2000是法国应用于高速铁路中的一种数字编码轨道电路,其信号特点是频率间隔比较小,所以要求其频谱的分辨率高,同时实时性要好.本文研究了用MEM在UM2000轨道电路信号分析中的应用.
Maximum entropy method is a common method of modern spectra estimate. Compared with traditional spectra estimate, it has the high_resolution. UM2000 is a kind of digital coding track circuit used in high_speed railway in France. The characteristic of its signal is that the interval of frequency is very small. So the spectra of the signal must has high_resolution and has good real time ability. This paper studied the application of maximum entropy method in UM2000 track circuit signal analysis.
出处
《北方交通大学学报》
CSCD
北大核心
2003年第3期107-110,共4页
Journal of Northern Jiaotong University
关键词
最大熵法
快速傅里叶变换
UM42000轨道电路
maximum entropy method(MEM)
Fast Fourier Transform Algorithm(FFT)
UM2000 track circuit
