Application of GNSS-PPP on Dynamic Deformation Monitoring of Offshore Platforms

作     者：YU Li-na XIONG Kuan GAO Xi-feng LI Zhi FAN Li-long ZHANG Kai YU Li-na;XIONG Kuan;GAO Xi-feng;LI Zhi;FAN Li-long;ZHANG Kai

作者机构：Institute of Ocean Energy and Intelligent ConstructionTianjin University of TechnologyTianjin 300384China China Railway Construction Bridge Engineering Bureau Group Co.LTDTianjin 300300China School of Civil EngineeringTianjin UniversityTianjin 300072China Department of Land Surveying and Geo-InformaticsThe Hong Kong Polytechnic UniversityHong KongChina State Key Laboratory of Precision BlastingJianghan UniversityWuhan 430056China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2024年第38卷第2期

页      面：352-361页

核心收录：

学科分类：081802[工学-地球探测与信息技术] 081505[工学-港口、海岸及近海工程] 08[工学] 081105[工学-导航、制导与控制] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0804[工学-仪器科学与技术] 0824[工学-船舶与海洋工程] 0802[工学-机械工程] 0814[工学-土木工程] 0811[工学-控制科学与工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：financially supported by the National Key R&D Program of China(Grant No.2022YFB4200705) the National Natural Science Foundation of China(Grant No.52109146) 

主　　题：GNSS-PPP offshore platform dynamic deformation monitoring improved CEEMDAN de-noising 

摘      要：The real-time dynamic deformation monitoring of offshore platforms under environmental excitation is crucial to their safe *** Global Navigation Satellite System-Precise Point Positioning(GNSS-PPP)has been considered for this purpose,its monitoring accuracy is relatively ***,the influence of background noise on the dynamic monitoring accuracy of GNSS-PPP remains ***,it is imperative to further validate the feasibility of GNSS-PPP for deformation monitoring of offshore *** address these concerns,vibration table tests with different amplitudes and frequencies are *** results demonstrate that GNSS-PPP can effectively monitor horizontal vibration displacement as low as±30 mm,which is consistent with ***,the spectral characteristic of background noise in GNSS-PPP is similar to that of GNSS-RTK(Real Time Kinematic).Building on this observation,an improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise(CEEMDAN)has been proposed to de-noise the data and enhance the dynamic monitoring accuracy of *** monitoring application research is also undertaken,successfully extracting and analyzing the dynamic deformation of an offshore platform structure under environmental excitation using GNSS-PPP monitoring in conjunction with improved CEEMDAN *** comparing the de-noised dynamic deformation trajectories of the offshore platform during different periods,it is observed that the platform exhibits reversible alternating vibration responses under environmental excitation,with more pronounced displacement deformation in the direction of load *** research results confirm the feasibility and potential of GNSS-PPP for dynamic deformation monitoring of offshore platforms.