[1]CHANG Liu,WANG Ning,SHI Shuangshuang.Comparative Analysis of Different Spatial Filters on the Vertical Deformation Field[J].Journal of Seismological Research,2018,41(03):464-471.
Copy
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 03
Page number:
464-471
Column:
Public date:
2018-08-20
- Title:
-
Comparative Analysis of Different Spatial Filters on the Vertical Deformation Field
- Author(s):
-
CHANG Liu; WANG Ning; SHI Shuangshuang
-
(The first Crust Deformation Monitoring and Application Center,China Earthquake Administration,Tianjin 300180,China)
-
- Keywords:
-
Median Filter; Mode estimator Filter; Boxcar Filter; Cosine Arch Filter; Gaussian Filter; Deformation Analysis
- CLC:
-
P315.725
- DOI:
-
-
- Abstract:
-
In this paper,principle and characteristics of five filter type which is the Median Filter,Mode estimator Filter,Boxcar Filter,Cosine Arch Filter and Gaussian Filter are studied,and selected a suitable method in north China vertical deformation analysis.The results show that the Median Filter is suitable for the background which is smooth surface.The effect of Mode estimator Filte,in the spacial scale impact by the cone is maximum.The effect of Boxcar Filter,in reducing the amplitude of the cone amplitude and the spacial scale impact by the cone is median.The effect of Boxcar Filter and Gaussian Filter are close,and Gaussian filter can better control the influence area range of the cone the filter.When the filter is applied to the deformation analysis,the filter window width is recommended to twice of the target radius.