广东工业大学学报 ›› 2023, Vol. 40 ›› Issue (03): 99-104.doi: 10.12052/gdutxb.220048
杨小鸽1, 王华1, 柏俊2, 吴希文1, 李廷俊3, 柏玉超3, 皮廷亮3
Yang Xiao-ge1, Wang Hua1, Bai jun2, Ng Alex Hay-Man1, Li Ting-jun3, Bai Yu-chao3, Pi Ting-liang3
摘要: 时变去相干等因素导致矿区形变干涉图中存在大量的噪声,采用四叉树滤波方法能滤除InSAR解缠相位中的离散噪声点,从而获得干净的形变结果。本文以云南某露天开采的矿区为例,探讨了最小划分窗口与粗差阈值对四叉树滤波效果的影响,并采用2019~2021年间的Sentinel-1卫星数据计算了该矿区的地表形变时间序列。结果表明,该矿区在监测期间存在显著的地表形变,大致集中在3个区域,形变特征在时域上既有抬升也有沉降,总体呈波浪状,最大沉降量达到67.3 mm,最大抬升量达79.3 mm。InSAR监测结果与32个地面测量机器人41个时段的结果差异为±10.9 mm。
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