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基于小波消噪的EMD模型在GPS振动信号处理中的应用 被引量:4

Empirical mode decomposition based on wavelet de-noise in GPS vibration signal deformation analysis
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摘要 经验模式分解和小波分解是当前有效处理非平稳信号的两种时频分析方法,它们各具有其优缺点,适用于不同的应用。从对GPS振动信号的预处理、时域和频域处理入手,结果分析表明,对GPS振动信号先进行小波滤波消除随机噪声的干扰,再应用经验模式分解更有利于变形特征信息的分离和提取,提取的信号与振动平台记录数据更加吻合。 Wavelet decomposition (WD) and empirical mode decomposition (EMD) are two new time- frequency analytic methods to analyze the non-stationary signals. Both methods had their own characteristics in non-stationary signal processing. From the analysis of real GPS deformation monitoring measurements of a vibration platform, it can be concluded that the EMD approach is a promising tool for deformation character extraction and deformation character detection, while the noise in GPS data can be eliminated by the wavelet transform. The detection signal is much more closer to the known signal of vibration platform.
出处 《工程勘察》 CSCD 北大核心 2011年第3期72-76,共5页 Geotechnical Investigation & Surveying
关键词 经验模式分解(EMD) 小波分解(WD) 全球定位系统 振动变形 empirical mode decomposition wavelet decomposition GPS vibration distortion收藏本站首页期刊全文库学位论文库会议论文库吾喜杂志注册|登录|我的账户基础科学|工程科技I辑|工程科技II辑|医药卫生科技|信息科技|农业科技|哲学与人文科学|社会科学I辑|社会科学II辑|经济管理高级搜索: 用" 经验模式分解(EMD) 小波分解(WD) "到知网平台检索,点击这里搜索更多...《工程勘察》 2011年03期 加入收藏 获取最新 基于小波消噪的EMD模型在GPS振动信号处理中的应用李旋 孙磊 骆辉 戴吾蛟 何伟 【摘要】: 经验模式分解和小波分解是当前有效处理非平稳信号的两种时频分析方法,它们各具有其优缺点,适用于不同的应用。从对GPS振动信号的预处理、时域和频域处理入手,结果分析表明,对GPS振动信号先进行小波滤波消除随机噪声的干扰,再应用经验模式分解更有利于变形特征信息的分离和提取,提取的信号与振动平台记录数据更加吻合。【作者单位】 : 江苏省地质调查研究院 中南大学测绘与国土信息工程系
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参考文献4

  • 1Chart W. S. , Xu Y. L. , M. ASCE, Ding X. L. , Xiong Y. L. , Dai W. J. Assessment of Dynamic Measurement Accuracyof GPS in Three Directions [ J ]. Journal of Surveying Engineering, 2006, August: 108 - 117.
  • 2戴吾蛟,丁晓利,朱建军,陈永奇,李志伟.基于经验模式分解的滤波去噪法及其在GPS多路径效应中的应用[J].测绘学报,2006,35(4):321-327. 被引量:144
  • 3Huang N. E. , Shen Z. , and Long S. R.. The Emprical mode decomposition and hilbert spectrum for nonlinear and non-stationary time series analysis [ J l, Proceedings of the Royal Society of London SERIESA, 1998, 454:903 -995.
  • 4Httang N. E., Shen Z., and Long S. R.. A new view of nonlinear water waves: The Hilbert spectrum [ J]. Annu. Rev. Fluid Mech. , 1999, 31 : 417 -457.

二级参考文献22

  • 1钟萍,丁晓利,郑大伟.CVVF方法用于GPS多路径效应的研究[J].测绘学报,2005,34(2):161-167. 被引量:38
  • 2SCHUPLER B C, ALLSHOUSE R L, CLARK T A. Signal Characteristics of GPS User Antennas [ J]. J Inst Navig,1994, 41(3):277-295.
  • 3YOUNG L, MEEHAN T. GPS Multipath Effect on Code-using Receiver[ A].American Geophysical Union Meeting[C].Baltimore: [ s. n. ], 1998,335-343.
  • 4Van DIERENDONCK A J, FENTON P, FORD T. Theory and Performance of Narrow Correlator Spacing in a GPS Receiver [J]. Navigation, 1992, 39(3):265-283.
  • 5TOWNSEND B, FENTON P. A Practical Approach to the Reduction of Pscudorange Multipath Errors in A L1 GPS Receiver[A]. Proc ION GPS-94 [C].[s.l.]:[s.n.], 1994.143-148.
  • 6VanNEE R D J. The Multipath Estimating Delay Lock Loop[A]. Proc IEEE 2nd Symposium on Spread Spectrum Techniques and Applications [ C ]. Yokohama: [s. n. ], 1992.39-42.
  • 7TOWNSEND B, VanNEE R D J, FENTON P, VanDIERE-NDONCK K J. Performance Evaluation of the Multipath Estimating Delay Lock Loop[A]. Proc ION National Technical Meeting, 1995 [ C ]. [ s.l]: [s.n.],1995. 227-283.
  • 8RAY J K. Mitigation of GPS Code and Carrier Phase Multipath Effects Using a Multi-Antenna System [ D]. Canada: University of Calgary, 2000.
  • 9AXELRAD P, COMP C J, MACDORAN P F. SNR-based Multipath Error Correction for GPS Differential Phase [J].IEEE Transactions on Aerospace and Electronic Systems,1996,32: 650-660.
  • 10COHEN C E, PARKINSON B W. Mitigating Muhipath Error in GPS Based Attitude Determination[J]. Guidance and Control, Advances in Astronautical Science, 1991,74: 53-68.

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