基于ICESat/GLAS数据的中国典型区域SRTM与ASTER GDEM高程精度评价

杜小平; 郭华东; 范湘涛; 朱俊杰; 严珍珍; 詹勤

doi:10.3799/dqkx.2013.087

Volume 38 Issue 4

Jul. 2013

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Article Navigation > Earth Science > 2013 > 38(4): 887-897

DU Xiao-ping, GUO Hua-dong, FAN Xiang-tao, ZHU Jun-jie, YAN Zhen-zhen, ZHAN Qin, 2013. Vertical Accuracy Assessment of SRTM and ASTER GDEM over Typical Regions of China Using ICESat/GLAS. Earth Science, 38(4): 887-897. doi: 10.3799/dqkx.2013.087

Citation:

DU Xiao-ping, GUO Hua-dong, FAN Xiang-tao, ZHU Jun-jie, YAN Zhen-zhen, ZHAN Qin, 2013. Vertical Accuracy Assessment of SRTM and ASTER GDEM over Typical Regions of China Using ICESat/GLAS. Earth Science, 38(4): 887-897. doi: 10.3799/dqkx.2013.087

Citation:

DU Xiao-ping, GUO Hua-dong, FAN Xiang-tao, ZHU Jun-jie, YAN Zhen-zhen, ZHAN Qin, 2013. Vertical Accuracy Assessment of SRTM and ASTER GDEM over Typical Regions of China Using ICESat/GLAS. Earth Science, 38(4): 887-897. doi: 10.3799/dqkx.2013.087

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Vertical Accuracy Assessment of SRTM and ASTER GDEM over Typical Regions of China Using ICESat/GLAS

doi: 10.3799/dqkx.2013.087

1.
Key Laboratory of Digital Earth, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2012-10-09
Publish Date: 2013-07-01

Abstract

Abstract

SRTM (shuttle radar topography mission) and ASTER GDEM (advanced spaceborne thermal emission and reflection radiometer global digital elevation model), the most accurate and available global DEM (digital elevation model) data, cover nearly the entire land surface of the earth. However, the precision of these DEM data has not been fully validated. This paper focuses on Chinese typical regions, aiming to verify the elevation precision of SRTM and ASTER GDEM based on ICESat / GLAS (ice, cloud, and land elevation satellite/geoscience laser altimeter system) elevation data by utilization of GIS (geographic information system) spatial analysis, 3D visualization and statistical analysis methods. The results show that SRTM elevation precision reaches 2.39m, and ASTER GDEM precision reaches 4.83m in the low altitude areas where the elevation value is less than 20m. The elevation precision is higher than the specified precision in both cases. However, the precision in Southwest study area is similar to the specified precision. The established linear regression model in the present study has high goodness of fit and significant correlation, but the applicability of the model needs further study.
- digital elevation model (DEM),
- ICESat/GLAS,
- remote sensing,
- elevation accuracy assessment

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References(29)

References

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