利用SBAS-DInSAR技术提取腾冲火山区形变时间序列

基于6景JERS-1 L波段SAR影像，利用小基线集-合成孔径雷达干涉测量技术，通过线性形变相位、非线性形变相位、大气延迟相位以及地形残差相位的分离，提取了腾冲火山地区1995—1997年间地表形变时间序列（雷达视线向），与2003—2004年的GPS观测结果对比表明，SBAS-DInSAR技术提取地壳形变的精度可达亚厘米级。时间序列形变显示胆札-高田断裂两侧形变差异性显著，可能与其下方存在的地壳岩浆囊的活动有关。打鹰山地区地表形变揭示其下方可能存在隐伏断裂。

TIME SERIES OF DEFORMATION IN TENGCHONG VOLCANIC AREA EXTRACTED BY SBAS-DInSAR

On the basis of the 6 JERS-1 SAR images,the time series of deformation in Tengchong volcanic area were obtained by SBAS-DInSAR technique through separating the linear deformation phase,the nonlinear deformation phase,the atmospheric phase screen and the DEM residual error phase.Compared with the GPS measurement results,SBAS-DInSAR technique can detect the crustal deformation at the precision of sub-cm level.The deformation of the Danzha-Gaotian fault is obviously different between the two sides,which may re...