The Trophosphere Correction in D-InSAR

• Main Authors: Hung, Lien-Chi, 洪連吉
• Other Authors: Lin, Shih-Yuan
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/c68kae

碩士 === 國立政治大學 === 地政學系 === 102 === Synthetic Aperture Radar (SAR) is capable of day/night and all-weather data acquisition, moreover, detection of millimeter-level deformation is achievable through differential interferometric synthetic aperture radar (D-InSAR) technique. However, there would be atmosphere delay error due to radar signals travel through the Earth atmosphere with D-InSAR. In order to improve the accuracy of surface deformation, the atmospheric error should be removed. To demonstrate the correction of errors caused by atmospheric delay, a number of six PALSAR images acquired from 2007/01/12 and 2010/03/07 were firstly processed with D-InSAR technique. Then different sources were applied to estimate the atmospheric error and were removed from the D-InSAR results. After comparing with GPS measurement, it was proved that the atmospheric error corrected D-InSAR results provided surface deformation with updated accuracy.