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针对单轨道DIn SAR(Differential Interferometric Synthetic Aperture Radar)技术仅能获取雷达视线向(Line of sight,Lo S)形变的缺点。详细介绍了一种基于ASAR和PALSAR影像来监测矿区地表三维形变的方法。应用该方法成功获取了因煤矿开采引起的地表水平及竖向形变,获取了沿观测线方向的地表倾斜,与实测相比最大倾斜差值为0.06 mm/m,竖向变形的均方根误差为±1 mm,证明了本文算法的可靠性。
For the single-track DIn SAR (Differential Interferometric Synthetic Aperture Radar) technology, only the shortcomings of the line of sight (Lo S) deformation can be obtained. A method based on ASAR and PALSAR images to monitor 3D surface deformation of mining area is introduced in detail. By using this method, the ground surface horizontal and vertical deformation caused by coal mining are successfully obtained, and the surface inclination along the observation line is obtained. The maximum slope difference is 0.06 mm / m compared with the measured value, and the root mean square error of vertical deformation Is ± 1 mm, which proves the reliability of the proposed algorithm.