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融合PS/SBAS算法成为当前InSAR技术的研究热点,本文通过融合PS/SBAS的优势,利用128景ALOS PALSAR影像和24景Radarsat-2影像获取了百年煤城徐州地区2007—2015年的地表形变场及变化趋势。试验结果表明:12007—2011年,徐州主要有4个沉降区,分布在沛县、丰县、铜山区和贾汪区。22012—2015年,沛县、丰县和铜山区地表沉降范围有所扩大;贾汪区地表沉降范围和速率明显减小,说明近年来贾汪区重点治理采矿塌陷工作已初步见效;另外,睢宁县县城出现明显沉降。3已有文献对沛县大屯中心区的沉降监测结果验证了试验结果是可靠的。4首次提取了徐州近8年间地表沉降的信息,可为该地区开展地表沉降调查监测与防治工作提供参考;试验方法可为全国开展地表沉降调查监测工作提供参考。
Fusion of PS / SBAS algorithm has become a research hotspot in current InSAR technology. By combining the advantages of PS / SBAS, this paper obtained the surface deformation field of Xuzhou from 2007 to 2015 in Coalmine City using 128 ALOS PALSAR images and 24 Radarsat-2 images. And the trend of change. The test results show that there are four main settlement areas in Xuzhou from 12007 to 2011, distributed in Peixian, Fengxian, Tongshan and Jiawang districts. In 22012-2015, the surface subsidence range of Peixian County, Fengxian County and Tongshan County expanded. The surface subsidence range and rate of Jiawang District decreased obviously, which indicated that the key work of mining subsidence in Jiawang District had taken effect initially. In addition, Suining County County obvious settlement. 3 The existing literature on Pei County, Tuen Mun center settlement monitoring results verify the test results are reliable. 4 For the first time, the information of surface subsidence in Xuzhou for the past 8 years is extracted, which can provide reference for monitoring and controlling surface subsidence in this area. The test method can provide reference for the survey and monitoring of surface subsidence in China.