| GPS多路径效应中的EEMD时空滤波器 |
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| 引用本文： | 徐佳,杨秋实,杨帆.GPS多路径效应中的EEMD时空滤波器[J].测绘科学,2013,38(3):57-58,62. |
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| 作者姓名： | 徐佳 杨秋实 杨帆 |
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| 作者单位： | 1. 辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000;辽宁工程技术大学地理空间信息技术与应用实验室,辽宁阜新123000
2. 辽宁工程技术大学测绘与地理科学学院,辽宁阜新,123000 |
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| 基金项目： | 国家科技支撑计划项目，辽宁省教育厅资助项目，辽宁工程技术大学地理空间信息技术与应用实验室基金资助项目 |
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| 摘 要： | 根据结构动态监测中GPS多路径效应的日重复性和低频周期等特性,本文研究了一种基于集成经验模态分解(EEMD)技术的滤波方法,构造了EEMD时空滤波器。通过计算连续两天GPS动态监测数据EEMD的相关系数,提取GPS监测数据中的多路径效应。实验结果表明了该方法的有效性,为结构动态变形模态分析提供了有效数据。
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| 关 键 词： | EEMD 时频滤波器 GPS多路径效应 相关分析 |
EEMD filtering technology in GPS multipath effect |
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| XU Jia,YANG Qiu-shi,YANG Fan.EEMD filtering technology in GPS multipath effect[J].Science of Surveying and Mapping,2013,38(3):57-58,62. |
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| Authors: | XU Jia YANG Qiu-shi YANG Fan |
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| Institution: | ①(①Geomatics College of Liaoning Technical University,Liaoning Fuxin 123000,China;②Lab.of Geographic Spatial Information Technology and Application,Liaoning Technical University,Liaoning Fuxin 123000,China) |
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| Abstract: | The method based on the Ensemble Empirical Mode Decomposition(EEMD) technique for filtering was studied in this paper,according to the day repeatability and low frequency to GPS multipath effects for structural dynamic monitoring.Fourier transform spectral characteristics for intrinsic mode function(IMF) from EEMD was studied to estabilish a new spatio-temporal filter.Then the correlation coefficient of two consecutive days of GPS dynamic monitoring data of EEMD results was studied to extract GPS multipath effects.The experimental results showed that this method could effectively provide efficient data for further dynamic modal analysis on structural deformation. |
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| Keywords: | EEMD time-frequency filter GPS multipath effects correlation analysis |
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