摘要
提出并优化了EMD小波组合去噪法对大桥监测结果进行去噪的过程,并与EMD去噪法、小波阈值去噪法进行比较。结果表明,优化的EMD小波去噪法是一种高效的大桥动态监测信号去噪方法,去噪效果最好。
GPS is the main means for dynamic deformation monitoring of large-span bridges.The signal of GPS contains all kinds of‘noises＇ and the true signal can be extracted after removing the noise.The EMD and wavelet de-noising method is proposed and optimized,and the EMD de-noising and the wavelet threshold de-noising methods are compared.The results show that the optimized EMD and wavelet de-noising method is effective in dynamic deformation monitoring of large-span bridges,and the de-noising effect is best.
出处
《大地测量与地球动力学》
CSCD
北大核心
2016年第12期1088-1091,1104,共5页
Journal of Geodesy and Geodynamics
基金
江苏省高校自然科学研究项目(13KJB420004)
江苏省高等教育教改研究项目(2015JSJG255)
宿迁市指令性科研项目(S2010010)
宿迁学院第五批精品课程~~
关键词
大跨度桥梁
几何位移监测
EMD小波
去噪方法
long-span bridges
geometric deformation monitoring
EMD and wavelet
de-noising method
