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遥感技术与应用  2016, Vol. 31 Issue (3): 599-606    DOI: 10.11873/j.issn.1004-0323.2016.3.0599
遥感应用     
COSMOGSkyMed数据在常州市地表形变监测中的应用
林 辉,柯长青
(南京大学江苏省地理信息技术重点实验室,江苏南京 210023)
Monitoring Surface Deformation in Changzhou City Using COSMO-SkyMed Data
Lin Hui,Ke Changqing
(Jiangsu Provincial Key Laboratory of Geographic Information Science and
Technology,Nanjing University,Nanjing 210023,China)
 全文: PDF(5857 KB)  
摘要:

小基线集合成孔径雷达干涉测量技术(SBASGInSAR)已成功应用于城市地表形变监测,并表现出极大的潜力和优势.X波段高分辨率雷达卫星在地表微小形变探测方面较C波段和L波段更为敏感.选取覆盖常州地区COSMOGSkyMed高分辨率SAR 影像,采用SBASGInSAR 方法获得了地表形变时间序列,对比水准观测数据,分析了干涉测量结果的精度,根据历史地下水位监测数据,分析了地下水水位变化对地表形变的影响.结果表明:干涉测量结果与水准观测数据具有很好的一致性,沉降区域主要发生在武进区,最大沉降量超过-40mm,主城区出现了轻微的回弹现象,回弹达到+5mm;地下水水位持续上升与地面沉降减缓、地面回弹趋势一致,地下水水位变化仍然是常州市地表形变的主要影响因素.

关键词: 地面沉降COSMOGSkyMedSBASGInSAR常州    
Abstract:

Small Baseline Subset Interferometric Synthetic Aperture Radar (SBAS\|InSAR) technique has been successfully applied to monitor surface deformation in urban area with great potential and advantages.X band high resolution radar satellite was more sensitive than the C band and L band in the tiny surface deformation detection.COSMO\|SkyMed high resolution SAR images which covered most area of Changzhou were selected to be processed,and the time series results of surface deformation by using the SBAS\|InSAR method were successfully achieved.Leveling observation data was used to verify the results of InSAR.Using the historical underground water level data,we analyzed the impact of groundwater level change on surface deformation.The results show that:the leveling observed data had a good agreement with the InSAR results,the subsidence area mainly occurred in Wujin district,with the maximal subsidence exceed -40 mm,central urban districts exhibited a slight land rebound at +5 mm;groundwater level which continued to rise was consistent with land rebound trend,groundwater level change was still the main influencing factors of surface deformation in Changzhou.

Key words: Land subsidence;COSMO\    SkyMed;SBAS\    InSAR;Changzhou
收稿日期: 2015-05-01 出版日期: 2016-07-19
:  TP79  
基金资助:

国家自然科学基金项目(41371391),江苏省科技计划项目(BE2013702).

通讯作者: 柯长青(1969-),男,陕西丹凤人,教授,主要从事遥感及其应用研究.Email:kecq@nju.edu.cn.   
作者简介: 林辉(1990-),男,湖北孝昌人,硕士研究生,主要从事InSAR技术及其应用研究.Email:njulinhui@163.com.
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引用本文:

林辉,柯长青. COSMOGSkyMed数据在常州市地表形变监测中的应用[J]. 遥感技术与应用, 2016, 31(3): 599-606.

Lin Hui,Ke Changqing. Monitoring Surface Deformation in Changzhou City Using COSMO-SkyMed Data. Remote Sensing Technology and Application, 2016, 31(3): 599-606.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2016.3.0599        http://www.rsta.ac.cn/CN/Y2016/V31/I3/599

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