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ISPRS Int. J. Geo-Inf. 2016, 5(12), 222; doi:10.3390/ijgi5120222

Adjustment and Assessment of the Measurements of Low and High Sampling Frequencies of GPS Real-Time Monitoring of Structural Movement

1
Department of Civil and Environmental Engineering, Incheon National University, 22012 Incheon, Korea
2
Incheon Disaster Prevention Research Center, Incheon National University, 22012 Incheon, Korea
3
Department of Public Works and Civil Engineering, Mansoura University, 35516 Mansoura, Egypt
4
Department of Structural Engineering, Mansoura University, 35516 Mansoura, Egypt
5
Department of Civil Engineering, Mansoura Higher Institute for Engineering and Technology, 35111 Talkha, Egypt
*
Author to whom correspondence should be addressed.
Academic Editor: Wolfgang Kainz
Received: 4 July 2016 / Revised: 23 November 2016 / Accepted: 25 November 2016 / Published: 29 November 2016
View Full-Text   |   Download PDF [3019 KB, uploaded 29 November 2016]   |  

Abstract

Global Positioning System (GPS) structural health monitoring data collection is one of the important systems in structure movement monitoring. However, GPS measurement error and noise limit the application of such systems. Many attempts have been made to adjust GPS measurements and eliminate their errors. Comparing common nonlinear methods used in the adjustment of GPS positioning for the monitoring of structures is the main objective of this study. Nonlinear Adaptive-Recursive Least Square (RLS), extended Kalman filter (EKF), and wavelet principal component analysis (WPCA) are presented and applied to improve the quality of GPS time series observations. Two real monitoring observation systems for the Mansoura railway and long-span Yonghe bridges are utilized to examine suitable methods used to assess bridge behavior under different load conditions. From the analysis of the results, it is concluded that the wavelet principal component is the best method to smooth low and high GPS sampling frequency observations. The evaluation of the bridges reveals the ability of the GPS systems to detect the behavior and damage of structures in both the time and frequency domains. View Full-Text
Keywords: GPS; RLS; EKF; wavelet; dynamic; structural health monitoring GPS; RLS; EKF; wavelet; dynamic; structural health monitoring
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MDPI and ACS Style

Kaloop, M.R.; Hu, J.W.; Elbeltagi, E. Adjustment and Assessment of the Measurements of Low and High Sampling Frequencies of GPS Real-Time Monitoring of Structural Movement. ISPRS Int. J. Geo-Inf. 2016, 5, 222.

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