Sensor technology applied in dynamic measurement in recent years become the mainly focus subject of attention. In this
paper, the high-frequency data collected by two kinds of sensors from vibration sensor and GPS receiver are
comparatively analyzed. The integrated scheme of dynamic measurement is proposed based on the high-frequency data
for vibration sensor and GPS receiver. The result of experiment is shown that the above sensors with the some same
characteristics based on the advantages of the sensors applied in the scheme. Finally, the feasibility and effectiveness of
the integrated scheme for the vibration sensor and GPS receiver is verified in the dynamic measurement experiment.
It is an important task to evaluate the safety during the life of bridges using the corresponding vibration parameters. With
the advantages of non-contact and high accuracy, the new remote measurement technology of GB-InSAR is suitable to
make dynamic measurement for bridges to acquire the vibration parameters. Three key technologies, including stepped
frequency-continuous wave technique, synthetic aperture radar and interferometric measurement technique, are
introduced in this paper. The GB-InSAR is applied for a high-speed railway bridge to measure of dynamic characteristics
with the train passing which can be used to analyze the safety of the monitored bridge. The test results shown that it is an
reliable non-contact technique for GB-InSAR to acquire the dynamic vibration parameter for the high-speed railway
bridges.
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