标题:Atmospheric phase delay correction of d-InSAR based on Sentinel-1A
作者:Li, Xi ;Huang, Guoman ;Kong, Qingli
通讯作者:Li, Xi
作者机构:[Li, Xi ;Huang, Guoman ;Kong, Qingli ] Shandong University of Science and Technology, Qingdao, China;[Li, Xi ;Huang, Guoman ] Key Laboratory of Earth 更多
会议名称:2018 ISPRS TC III Mid-Term Symposium on Developments, Technologies and Applications in Remote Sensing
会议日期:May 7, 2018 - May 10, 2018
来源:International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
出版年:2018
卷:42
期:3
页码:955-960
DOI:10.5194/isprs-archives-XLII-3-955-2018
摘要:In this paper, we used the Generic Atmospheric Correction Online Service for InSAR (GACOS) tropospheric delay maps to correct the atmospheric phase delay of the differential interferometric synthetic aperture radar (D-InSAR) monitoring, and we improved the accuracy of subsidence monitoring using D-InSAR technology. Atmospheric phase delay, as one of the most important errors that limit the monitoring accuracy of InSAR, would lead to the masking of true phase in subsidence monitoring. For the problem, this paper used the Sentinel-1A images and the tropospheric delay maps got from GACOS to monitor the subsidence of the Yellow River Delta in Shandong Province. The conventional D-InSAR processing was performed using the GAMMA software. The MATLAB codes were used to correct the atmospheric delay of the D-InSAR results. The results before and after the atmospheric phase delay correction were verified and analyzed in the main subsidence area. The experimental results show that atmospheric phase influences the deformation results to a certain extent. After the correction, the measurement error of vertical deformation is reduced by about 18 mm, which proves that the removal of atmospheric effects can improve the accuracy of the D-InSAR monitoring.
© Authors 2018. CC BY 4.0 License.
收录类别:EI
资源类型:会议论文
TOP