Journal of Geodesy and Geodynamics

Application of Virtual Sealing in Noise Reduction of Deformation Instrument: Using SS-Y Tensometer at Wujiahe Station as an Example

Wei HU, Xuedong FENG, Haodong JIA, Wei SHI, Wenchao BAO

Journal of Geodesy and Geodynamics, 2025, 45(2): 203-207. DOI: 10.14075/j.jgg.2024.03.127

Fig. 4 The PSD of tensometer at Wujiahe seismic station from January to February 2020 and from January to February 2021

Other figure/table from this article

Fig. 1 Position of deformation instruments in the cave and profile of tensometer at Wujiahe seismic station
Fig. 2 Data curve comparison between January to February 2020 and January to February 2021 in NS direction of tensometer at Wujiahe station
Fig. 3 First order difference comparison between January to February 2020 and January to February2021 of tensometer at Wujiahe station
Fig. 5 Amplitude-frequency response characteristics of low-pass filter
Fig. 6 Comparison before and after virtual sealing filter
Fig. 7 PSD comparison of pre-processed data and virtual sealing filter data