Validation of the absolute height accuracy of TanDEM-X DEM for moderate terrain

Validation of the absolute height accuracy of TanDEM-X DEM for moderate terrain
复制标题

验证 TanDEM-X DEM 对于中等地形的绝对高度精度

DOI:
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发表时间:
2014
期刊:
2014 IEEE Geoscience and Remote Sensing Symposium
影响因子:
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通讯作者:
A. Roth
A. Roth
中科院分区:
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文献类型:
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作者:
B. Wessel;A. Gruber;M. Huber;M. Breunig;Susanne Wagenbrenner;A. Wendleder;A. Roth

文献摘要

被引文献

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2013年9月,开始制作TanDEM-X数字高程模型(DEM)。由于困难地形的数据采集持续到2014年4月,因此开始为平坦至中等地形区域制作最终的DEM,其中存在两个最终覆盖范围。本文着重于中等地形的第一次验证,以证明绝对高度精度。在一个详细的比较三个DEM瓦片从不同的大陆被选择来验证TanDEM-X DEM通过计算差异到GPS轨迹,ICESat验证点,和SRTM。在全球范围内,迄今为止制作的所有TanDEM-X DEM都与ICESat和GPS轨迹进行了比较。这里首次提出的两个验证表明,TanDEM-X在中等地形下的绝对高度误差低于2米,因此远远优于规定的10米/LE 90。
In September 2013 the production of TanDEM-X digital elevation model (DEM) started. As the data acquisition for difficult terrain lasted until April 2014, final DEM production started for flat to moderate terrain regions where two final coverages surfice. This paper focuses on a first validation of moderate terrain to prove the absolute height accuracy. In a detailed comparison three DEM tiles from different continents are chosen to validate the TanDEM-X DEM by computing differences to GPS tracks, ICESat validation points, and SRTM. On a global scale all TanDEM-X DEMs produced so far are compared with ICESat and GPS tracks. Both validations presented here for the first time indicate that the absolute height error for moderate terrain for TanDEM-X is below 2m and therefore much better than the specified 10m/LE90.