An Improved Filtering Method and Application of Landslide Deformation Monitoring

Figure 9

Dangchuan 4# loess landslide: (a) the cumulative displacement–time curves and the deformation rate curve, (b) deformation rate curve obtained by the least-squares method and the improved filtering method, (c) tangent angle curves, and (d) maximum tangent angle; (d1) least-square tangent angle and (d2) improved tangent angle.