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    Experimental assessment of post-processed kinematic Precise Point Positioning method for structural health monitoring

    Access Status
    Fulltext not available
    Authors
    Yigit, Cemal Ozer
    Date
    2016
    Type
    Journal Article
    
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    Citation
    Yigit, C.O. 2016. Experimental assessment of post-processed kinematic Precise Point Positioning method for structural health monitoring. Geomatics, Natural Hazards and Risk. 7 (1): pp. 360-383.
    Source Title
    Geomatics, Natural Hazards and Risk
    DOI
    10.1080/19475705.2014.917724
    ISSN
    1947-5705
    School
    School of Earth and Planetary Sciences (EPS)
    URI
    http://hdl.handle.net/20.500.11937/72611
    Collection
    • Curtin Research Publications
    Abstract

    © 2014 Taylor & Francis. Monitoring the response of engineering structures, such as tall buildings, tower and large-scale bridges, under severe loading conditions, such as strong earthquake or wind storm, is an important requirement to verify their design and construction and to evaluate structural condition and reliability. In the last two decades, high-rate real-time or post-processed kinematic differential Global Positioning System (DGPS) has been widely used in dynamic displacement measurements of civil engineering structures. In recent years, interest has increased for Precise Point Positioning (PPP) due to its capability to generate positioning solutions as accurate as DGPS. In this study, the potential of post-processed kinematic PPP in terms of monitoring dynamic displacement response of a structure has been explored based on free damped oscillation events obtained from a model structure, which is able to vibrate in the fundamental and higher modes of vibration. A number of experiments have been carried out and five events, each of which is different character, have been selected to compare PPP results with DPGS results in the time and frequency domain. The results clearly demonstrate that the PPP method, like the DGPS method, offers great potential for the measurement of horizontal and vertical dynamic movement of structures. The impact of a short period (one minute) of observation length on the result of the kinematic PPP method was also investigated in terms of sensing the dynamic movement of a structure. Twenty selected one-minute data-sets extracted from a one-hour original data-set were processed by Canadian spatial reference system PPP and each one-minute PPP solution was compared with the corresponding segment obtained from the one-hour PPP solution. The results show that the one-minute PPP solution is able to extract the fundamental natural frequency of the oscillation in the horizontal and vertical component just like the one-hour PPP solution after the offset is removed and the lower frequency trend component is filtered out.

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