利用时间序列干涉图叠加法监测江苏盐城地区地面沉降
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摘要
针对永久散射体技术和短基线集法所需SAR数据较多的问题,采用时间序列干涉图叠加法监测区域地表沉降,提出利用结构函数作为判断因子提取出受大气扰动较小的干涉图用于叠加分析,以确保大气延迟误差对地表沉降监测结果影响的最小化。利用13景ASAR数据,研究了江苏省盐城市在2003-12～2009-05期间的地面沉降趋势。
For permanent scatterer and small baseline subsets need no less than 20 SAR images to obtain reliable results,time series interferogram stacking method is used to detect the ground subsidence of Yancheng City.In order to minimize the effects of atmospheric delay error,structure function is used to extract the interferograms which have small atmospheric effects.The ground subsidence of Yancheng City during the period of 2003-12~2009-05 is obtained by 13 ASAR images.The results show that there are 4 subsidence funnels in Yancheng downtown during the period of 2003-12~2005-11.New subsidence funnels appear and local subsidence rate increases during the period of 2008-12~2009-05.
For permanent scatterer and small baseline subsets need no less than 20 SAR images to obtain reliable results,time series interferogram stacking method is used to detect the ground subsidence of Yancheng City.In order to minimize the effects of atmospheric delay error,structure function is used to extract the interferograms which have small atmospheric effects.The ground subsidence of Yancheng City during the period of 2003-12~2009-05 is obtained by 13 ASAR images.The results show that there are 4 subsidence funnels in Yancheng downtown during the period of 2003-12~2005-11.New subsidence funnels appear and local subsidence rate increases during the period of 2008-12~2009-05.
引文
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[3]张诗玉,李陶,夏耶.基于InSAR技术的城市地面沉降灾害监测研究[J].武汉大学学报.信息科学版,2008,33(8):850-858
[4]Zebker H A,Villasenor J.Decorrelation inInterferometric Echoes[J].IEEE Transactions onGeoscience and Remote Sensing,1992,30:950-959
[5]Zebker H A,Rosen P.Atmospheric Artifacts inInterferometric SAR Surface Deformation andTopographic Maps[J].Journal of GeophysicalResearch,1997,102(B4):7 547-7 563
[6]Ferretti A,Prati C,Rocca F.Permanent Scatterersin SAR Interferometry[J].IEEE Transactions onGeoscience and Remote Sensing,2001,39(1):8-19
[7]Ferretti A,Prati C,Rocca F.Non-linearSubsidence Rate Estimation Using PermanentScatters in Differential SAR Interferometry[J].IEEE Transactions on Geoscience and RemoteSensing,2002,38(5):2 202-2 212
[8]Berardino P,Fornaro G,Lanari R,et al.A NewAlgorithm for Surface Deformation Monitoring Based onSmall Baseline Differential SAR Interferograms[J].IEEE Transaction on Geoscience and Remote Sensing,2002,40(11):2 375-2 383
[9]Lanari R,Mora O,Manunta M,et al.A Small-Baseline Approach for Investigating Deformationson Full-Resolution Differential SAR Interferograms[J].IEEE Transaction on Geoscience and RemoteSensing,2004,42(7):1 377-1 386
[10]Raucoules D,Maisons C,Carnec C,et al.Monitoringof Slow Ground Deformation by ERS RadarInterferometry on the Vauvert Salt Mine(France)Comparison with Ground-Based Measuremen[J].Remote Sensing of Environment,2003,88:468-478
[11]Strozzi T,Wegmüller U,Werner C,et al.Measurementof Slow Uniform Surface Displacement with mm/yearAccuracy[C].IGARSS’2000,Hawaii,USA,2000
[12]范景辉,郭华东,郭小方,等.基于相干目标的干涉图叠加方法监测天津地区地面沉降[J].遥感学报,2008,12(1):111-118
[13]张仁铎.空间变异理论及应用[M].北京:科学出版社,2005
[14]Treuhaft R N,Lanyi G E.The Effect of Dynamic WetTroposphere on Radio Interferometric Measurements[J].Radio Science,1987,22(2):251-256
[15]李郎.江苏沿江开发带地下水开采三维渗流场-地面沉降耦合数值模拟[D].南京:河海大学,2006
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