李路,洪友堂

• 1:中国地质大学(北京)土地科学技术学院

摘要(Abstract)：

针对矿区地表发生严重时空失相干现象影响小基线集(SBAS)技术的应用,该文从提高监测点的数量与质量出发对该技术进行改进。在像元数量方面,在永久性散射体合成孔径雷达干涉测量(PS-InSAR)技术的点提取基础上提出中等相干格网点提取算法,着重提取采矿沉陷区周边点,以提高监测区域采样密度;在像元质量方面,估计并剔除差分干涉相位中与高程相关的大气相位,采用自适应性滤波、二次多项式模型进行相位优化处理,多级滤波迭代回归分析,最终提取地表形变信息。将改进技术应用于实地矿区,通过分析说明改进有效与结果可靠,处理结果显示该研究区共有两处区域发生大量级沉降现象,其中北侧采空区沉陷状况最大,最大沉降速率可达-50.948 mm/a,而南侧采空区较缓和,但都对周围村庄造成影响,应引起注意。

关键词(KeyWords)： InSAR;矿区;沉降监测;时空失相干

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李路,洪友堂

DOI: 10.16251/j.cnki.1009-2307.2020.10.014

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