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| 引用本文： | 张品,申重阳,杨光亮,张晓彤,陈钊. ASTER GDEM��ֱ�������ۼ������������θ����е�������[J]. 大地测量与地球动力学, 2015, 35(2): 318-321 |
| 作者姓名： | 张品 申重阳 杨光亮 张晓彤 陈钊 |
| 作者单位： | 1〓中国地震局地震研究所（地震大地测量重点实验室），武汉市洪山侧路40号, 430071 2〓中国地震局第一监测中心，天津市河东区耐火路7号，300180 3〓中国地震局地壳应力研究所武汉科技创新基地，武汉市洪山侧路40号,430071 |
| 基金项目： | 国家重点基础研究发展计划(2013CB733304)|中国地震局重大行业专项 (201008001，201308011) |
| 摘 要： | ?????????????GPS?????ASTER GDEM?????д???????????????????????????θ????е????????????????????????ASTER GDEM????????-??????-????????????????У??????GPS?????????????14.93 m??18.02 m???????????????????н???????????С???????С???????????????????????θ????У?ASTER GDEM???????????????á? |
| 关 键 词： | ???????? GPS???? ASTER GDEM ??????? ???θ??? |
| 收稿时间： | 2014-04-04 |
Vertical Accuracy Assessment of ASTER GDEM and Its Applicability Analysis in Gravity Terrain Correction |
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| ZHANG Pin,SHEN Chongyang,YANG Guangliang,ZHANG Xiaotong,CHEN Zhao. Vertical Accuracy Assessment of ASTER GDEM and Its Applicability Analysis in Gravity Terrain Correction[J]. Journal of Geodesy and Geodynamics, 2015, 35(2): 318-321 | |
| Authors: | ZHANG Pin SHEN Chongyang YANG Guangliang ZHANG Xiaotong CHEN Zhao |
| Affiliation: | 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. |
| Keywords: | gravity profile GPS data ASTER GDEM vertical error terrain correction |
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