VERTICAL ACCURACY ASSESSMENT OF FREELY AVAILABLE DIGITAL ELEVATION MODELS: IMPLICATIONS FOR LOW-RELIEF LANDSCAPES

被引：1
|
作者：
del Valle, Hector [2 ]
Tentor, Fernando [2 ]
Sione, Walter [2 ,3 ]
Zamboni, Pamela [2 ]
Acenolaza, Pablo [2 ,5 ,6 ]
Metternicht, Graciela [1 ,4 ]
机构：
[1] Univ New South Wales, Earth & Sustainabil Sci Res Ctr, Sydney, NSW, Australia
[2] Univ Autonoma Entre Rios, Ctr Reg Geomat, Oro Verde, Argentina
[3] Univ Nacl Lujan, Dept Ciencias Basicas, Buenos Aires, DF, Argentina
[4] IUCN, Dryland Ecosyst Specialist Grp, Commiss Ecosyst Management, Gland, Switzerland
[5] Ctr Invest Cient & Transferencia Tecnol Prod, Diamante, Entre Rios, Argentina
[6] Univ Nacl Entre Rios, Fac Ciencias Agropecuarias, Oro Verde, Argentina
来源：
2022 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2022) | 2022年
关键词：
DEM; DSM; DTM; quality; error; GNSS; ERROR;
D O I：
10.1109/IGARSS46834.2022.9884896
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Global Digital Elevation Models (DEMs) are widely used in many developing countries to help mapping soil-scapes, and users rely on metadata on vertical accuracy (VA) given by product developers. VA is important in modelling topographic attributes useful for mapping and predicting soil-scapes. This paper summarizes a comparative analysis of vertical accuracy of eight freely available DEMs derived from EO datasets in a low-relief landscape of Argentina (Entre Rios province), where the main objective is to map complex soil cover patterns. These are: MERIT-DEM; SRTMGL1 v3; ASTGTM v3; AW3D30 v3.1; Copernicus GLO-30; NASA DEM HGT v1; SRTMGL1up-sampling; Argentina's MDE-Ar v2. Results show the Copernicus GLO-30 dataset was consistent with its nominal quality specifications, whereas the ASTGTM v3 from NASA/Jaxa ranked last. While these results are restricted to the geography of this study area, they reaffirm the need to assess DEM's quality independently of that provided by the product developers.
引用
收藏
页码：6414 / 6417
页数：4
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