| Robust Spectral Estimation of Track Irregularity |
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| 作者姓名： | 傅文娟 陈春俊 |
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| 作者单位： | SchoolofMechanicalEngineering,SouthwestJiaotongUniversity,Chengdu610031,China |
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| 基金项目： | TheResearchProjectofRailwayMinistryofChina(No.100591). |
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| 摘 要： | Because the existing spectral estimation methods for railway track irregularity analysis are very sensitive to outliers, a robust spectral estimation method is presented to process track irregularity signals. The proposed robust method is verified using 100 groups of clean/contaminated data reflecting he vertical profile irregularity taken from Bejing-Guangzhou railway with a sampling frequency of 33 data every 10 m, and compared with the Auto Regressive (AR) model. The experimental results show that the proposed robust estimation is resistible to noise and insensitive to outliers, and is superior to the AR model in terms of efficiency,, stability and reliability.
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| 关 键 词： | 光谱预估 铁路轨道 不规则性 稳定性 |
Robust Spectral Estimation of Track Irregularity |
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| Fu Wenjuan,Chen Chunjun.Robust Spectral Estimation of Track Irregularity[J].Journal of Southwest Jiaotong University,2005,13(1):44-48. |
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| Authors: | Fu Wenjuan Chen Chunjun |
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| Abstract: | Because the existing spectral estimation methods for railway track irregularity analysis are very sensitive to outliers, a robust spectral estimation method is presented to process track irregularity signals. The proposed robust method is verified using 100 groups of clean/contaminated data reflecting he vertical profile irregularity taken from Bejing-Guangzhou railway with a sampling frequency of 33 data every ~10 m, and compared with the Auto Regressive (AR) model. The experimental results show that the proposed robust estimation is resistible to noise and insensitive to outliers, and is superior to the AR model in terms of efficiency, stability and reliability. |
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| Keywords: | Robustness Robust spectral estimation Railway track spectra Railway track irregularity |
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