| 利用小波分析技术提取移频信号信息特征 |
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| 引用本文： | 赵林海,赵胜凯,穆建成. 利用小波分析技术提取移频信号信息特征[J]. 铁道学报, 2006, 28(1): 117-120 |
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| 作者姓名： | 赵林海 赵胜凯 穆建成 |
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| 作者单位： | 1. 北京交通大学,电子信息工程学院,北京,100044
2. 铁道部,科学技术司,北京,100844 |
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| 摘 要： | 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。
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| 关 键 词： | 小波分析 小波脊线 移频信号 |
| 文章编号： | 1001-8360（2006）00-0117-04 |
| 收稿时间： | 2004-07-30 |
| 修稿时间： | 2005-05-26 |
Using Wavelet Analysis Technology for Feature Extraction of Frequency Shift Signal |
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| ZHAO Lin-hai,ZHAO Sheng-kai,MU Jian-cheng. Using Wavelet Analysis Technology for Feature Extraction of Frequency Shift Signal[J]. Journal of the China railway Society, 2006, 28(1): 117-120 |
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| Authors: | ZHAO Lin-hai ZHAO Sheng-kai MU Jian-cheng |
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| Affiliation: | 1.School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044,China;2.Bureau of Sience and Technology, Ministry of Railways, Beijing 100844, China |
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| Abstract: | According to the features of frequency shift signals, a feature extraction method based on the wavelet ridge line technique is proposed.This method provides a quick and accurate way to calculate the instantaneous frequency and envelope of frequency shift signal.Based on the calculated instantaneous frequency,the modulating low frequency can be imputted accordingly,thus providing a new scheme for analyzing and decoding the railway dedicated frequency shift signal and UM71 signal. |
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| Keywords: | wavelet analysis wavelet ridge frequency shift signal |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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