RELIABILITY STUDY ON SEDIMENTATION MONITORING FOR D-INSAR
BY USING ERA-INTERIM DATA AND NEQUICK MODEL
1) Southwest University of Science and Technology, School of Environment and Resource, Mianyang 621010
2) Shanghai Astronomical Observatory, CAS, Shanghai 200030
3) Graduate School of the Chinese Academy of Sciences, Beijing 100039
Abstract：Four images for ALOS PALSAR of the track 474 before and after Wenchuan earthquake are processed by the software ROI_PAC, and then the tropospheric and ionospheric delay are corrected
by ERAInterim data and NeQuick model. The sedimentation is compared with that derived from five GPS observations, the results show that the mean value of the differences between the sedimentation derived from DInSAR and that from GPS observations is 0.104 m, which is 0.057 m when the sedimentation derived from DInSAR which the tropospheric and ionospheric delay are corrected. This illuminates that the accuracy of the sedimentation from DInSAR is improved after the tropospheric and ionospheric delay are corrected.
Ma Zhiquan,Chen Yanling,Chen Qinming et al. RELIABILITY STUDY ON SEDIMENTATION MONITORING FOR D-INSAR
BY USING ERA-INTERIM DATA AND NEQUICK MODEL[J]. jgg, 2013, 33(4): 61-64.
