李永生, 张景发, 罗毅, 姜文亮. 利用高分辨率聚束模式TerraSAR-X影像的PSInSAR监测地表变形[J]. 武汉大学学报 ( 信息科学版), 2012, 37(12): 1452-1455.
引用本文: 李永生, 张景发, 罗毅, 姜文亮. 利用高分辨率聚束模式TerraSAR-X影像的PSInSAR监测地表变形[J]. 武汉大学学报 ( 信息科学版), 2012, 37(12): 1452-1455.
LI Yongsheng, ZHANG Jingfa, LUO Yi, JIANG Wenliang. Monitoring Land Deformation Using PSInSAR with TerraSAR-X High Resolution Spotlight SAR Images[J]. Geomatics and Information Science of Wuhan University, 2012, 37(12): 1452-1455.
Citation: LI Yongsheng, ZHANG Jingfa, LUO Yi, JIANG Wenliang. Monitoring Land Deformation Using PSInSAR with TerraSAR-X High Resolution Spotlight SAR Images[J]. Geomatics and Information Science of Wuhan University, 2012, 37(12): 1452-1455.

利用高分辨率聚束模式TerraSAR-X影像的PSInSAR监测地表变形

Monitoring Land Deformation Using PSInSAR with TerraSAR-X High Resolution Spotlight SAR Images

  • 摘要: 利用20景于2010-03~2010-11期间采集的高分辨率聚束(1m分辨率)模式的TerraSAR-X SAR数据,采用永久散射体干涉测量技术(PSInSAR)获取了西藏羊八井地区由地热电站开采地下水引起的地面沉降。结果显示,羊八井地热电站周边及地热开采井地区在2010年期间的地面沉降速率最大达到25mm·a-1,而盆地其他地区的地面平均沉降速率为1mm·a-1。将其与ASAR获取的平均沉降速率结果对比,两者的相关性达到了0.76,这说明TerraSAR-X高分辨率SAR数据不仅可以提供高密度PS点,而且更好地体现了散射体的细节变化和微量位移情况。

     

    Abstract: Persistent scatterer InSAR was used to detect surface subsidence in the area around the Yangbajing geothermal power plant due to extraction of ground water with twenty high resolution TerraSAR-X spotlight SAR images collected between March and November 2010.The results suggest that land subsidence in the areas of geothermal wells is up to 25 mm·a-1 whilst the subsidence in the basin is less than 1 mm·a-1.And the correlation between TerraSAR-X and ASAR derived mean velocities is 0.76.TerraSAR-X high resolution spotlight SAR images can provide higher density of PS points than ASAR data,and also can reveal the detail change and micro-displacement in a single ground object.

     

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