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Author: Admin | 2025-04-28
Were overlaid with SBAS-InSAR monitoring results, and the cumulative displacements corresponding to the positions of the leveling observation points were extracted. After collecting the required validation dataset, the correlation coefficient between the leveling measurement results and the SBAS-InSAR monitoring results was calculated. 2.3.3. 2D Deformation DecompositionFor open-pit mines, deformation information in the east–west direction and vertical direction of the slopes is crucial for the safety of mining operations. Based on the imaging geometry principles of ascending and descending radar tracks (see Figure 6), we perform 2D deformation decomposition on the deformation results from the ascending and descending tracks to obtain the east–west and vertical deformation information for the Buzhaoba open-pit mine.Since the contribution of the north–south direction to the LOS displacement is minimal [33], neglecting the north–south component during the calculation of east–west and vertical displacements significantly reduces the standard deviation of the computed displacement values [34]. This is expressed as d a s c d d e s c = − s i n θ a s c c o s α a s c c o s θ a s c − s i n θ d e s c c o s α d e s c c o s θ d e s c d E d U . (5) In the equation, dasc and ddesc represent the LOS displacement accumulations for the ascending and descending tracks, respectively, while dE and dU are the east–west and vertical deformation components, respectively. θ and α are the satellite’s incidence angle and azimuth angle, respectively. During the calculation, the average satellite incidence angles ( θ a s c = 41.86 ° , θ d e s c = 33.37 ° ) and average azimuth angles ( α a s c = 347.58 ° , α d e s c
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