Inferring Multi-dimensional Deformation Filed in Xi'an by Combining InSAR of Ascending and Descending Orbits with GPS Data

Acta Geodaetica et Cartographica Sinica

ZHANG Juqing¹  WANG Xiaying¹  ZHANG Qin¹  ZHAO Chaoying¹ 

[1]College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China

关键词: InSAR;    GPS;    data integration;    deformation field;    system deviation;   

DOI  :  10.11947/j.AGCS.2016.20150485

来源: DOAJ

【 摘 要 】

According to the character that InSAR observations are insensitive to deformations of north direction, it is proposed that inferring three dimensional deformations by combing north-south deformation field from GPS interpolation with InSAR results.The proposed method effectively avoids the effects of ignoring north-south deformation information, well improves the accuracy of vertical deformation. Taking the Xi'an city as the research area, combining EnviSat ASAR, ALOS PALSAR and GPS data, inferring absolute deformation rate filed of east-west and vertical directions, contrast of the deformation with 11 leveling points shows that the integration not only be capable of providing three dimensional deformation field but also attain more accurate vertical results compared with ignoring north-south deformation. The result will help acknowledge the Xi'an geological background.

【 授权许可】

Unknown