Vertical Accuracy Assessment of ASTER GDEM and Its Applicability
Analysis in Gravity Terrain Correction
1〓Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, 40 Hongshance Road, Wuhan 430071,China
2〓First Crust Monitoring and Application Center, CEA, 7 Nazhuo Road, Tianjin 300180, China
3〓Wuhan Base of Institute of Crustal Dynamic, CEA,40 Hongshance Road,Wuhan 430071,China
Abstract We apply GPS data on gravity profiles to assess ASTER GDEM’s vertical accuracy, and then discuss its application in gravity terrain computation. The results show that standard deviations of ASTER GDEM compared to GPS data in the Guiyang-Weixi and Jinchuan-Qianwei gravity profiles are 14.93 m and 18.02 m respectively. The model data and the actual GPS measurements have good consistency. With the simulation, it can be concluded that the application of the ASTER GDEM is effective in computing middle and far zone gravity terrain corrections in small scale, as well as far zone corrections in large scale.
ZHANG Pin,SHEN Chongyang,YANG Guangliang et al. Vertical Accuracy Assessment of ASTER GDEM and Its Applicability
Analysis in Gravity Terrain Correction[J]. jgg, 2015, 35(2): 318-321.
ZHANG Pin,SHEN Chongyang,YANG Guangliang et al. Vertical Accuracy Assessment of ASTER GDEM and Its Applicability
Analysis in Gravity Terrain Correction[J]. jgg, 2015, 35(2): 318-321.
