DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 The ASTER Global DEM (GDEM) version 1, is a global digital elevation model with one arc-second grid, generated using the ASTER stereo image archive 2000 to August 2008, and was released on June 29, 2009. The GDEM-1 had some bad elevation data.
M. Urai, T. Tachikawa, H. Fujisada
doaj +1 more source
EVALUATION OF ASTER GDEM VER2 USING GPS MEASUREMENTS AND SRTM VER4.1 IN CHINA [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 The freely available ASTER GDEM ver2 was released by NASA and METI on October 17, 2011. As one of the most complete high resolution digital topographic data sets of the world to date, the ASTER GDEM covers land surfaces between 83°N and 83°S at a spatial
P. Li +8 more
doaj +1 more source
TOPOGRAPHIC FEATURES OF MALYY NARYN RIVER WATERSHED BASED ON DIFFERENT DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 This paper researched the influence on the topographical characteristics of watersheds by setting different catchment area thresholds based on different data sets, namely ZY3 DSM, SRTM DEM and ASTER GDEM.
M. Li, L. Chen, Y. Cui, M. Zhang
doaj +1 more source
Vertical accuracy assessment of various open-source DEM data: DEMNAS, SRTM-1, and ASTER GDEM
Geodesy and Cartography, 2023 DEM can be used optimally when it has good accuracy. Thus, assessing DEM data quality is mandatory before use it for specific thematic applications. Recently, there are open-source DEM data that can be downloaded and used freely by users, such as SRTM ...
Danang Budi Susetyo
doaj +1 more source
VERTICAL ACCURACY EVALUATION OF ASTER GDEM2 OVER A MOUNTAINOUS AREA BASED ON UAV PHOTOGRAMMETRY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 Global digital elevation models (GDEM) provide elementary information on heights of the Earth’s surface and objects on the ground. GDEMs have become an important data source for a range of applications. The vertical accuracy of a GDEM is critical for its
Y. Liang +7 more
doaj +1 more source
EVALUATION OF ASTER GDEM v.2 USING GPS CHECKPOINTS, OSGB DEM VALUES AND PHOTOGAMMETRICALLY DERIVED DEMS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 A 2010 study examining ASTER GDEM v1 data revealed accuracies of 12-25m and strong negative discrepancy biases compared to precise GPS observations, in several test sites in China.
H. Sadeq, J. Drummond, Z. Li
doaj +1 more source
VALIDATION OF THE ASTER GLOBAL DIGITAL ELEVATION MODEL VERSION 2 OVER THE CONTERMINOUS UNITED STATES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 The ASTER Global Digital Elevation Model Version 2 (GDEM v2) was evaluated over the conterminous United States in a manner similar to the validation conducted for the original GDEM Version 1 (v1) in 2009.
D. Gesch +4 more
doaj +1 more source
ارزیابی مقایسه ای صحت ارتفاعی مدل های رقومی ارتفاعی ASTER و SRTM [PDF]
اطلاعات جغرافیایی, 2016 مدل‌های رقومی ارتفاعی پژوهشگران را قادر می‌سازند تا تحقیقات جغرافیایی در مقیاس جهانی و منطقه‌ای از قبیل تغییرات جهانی، مخاطرات محیطی، پایش محیط و ... را انجام دهند. بنابراین مدل‌های رقومی ارتفاعی نقشی کلیدی در تحقیقات علمی ایفا می‌کنند. SRTM و ASTER GDEM
رضا آقاطاهر +3 more
doaj +1 more source
EVALUATION OF ASTER GDEM V3 USING ICESAT LASER ALTIMETRY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 We have used a set of Ground Control Points (GCPs) derived from altimetry measurements from the Ice, Cloud and land Elevation Satellite (ICESat) to evaluate the quality of the 30 m posting ASTER (Advanced Spaceborne Thermal Emission and Reflection ...
C. C. Carabajal, J.-P. Boy
doaj +1 more source
Comparison of Digital Elevation Models for the designing water reservoirs: a case study Pskom water reservoir [PDF]
E3S Web of Conferences, 2021 This study investigates the accuracy of various DEMs (SRTM DEM, ASTER GDEM, and ALOS PALSAR DEM) for the area of the designing Pskom water reservoir (recommended to construction in Pskom River, in Tashkent region.
Khasanov Khojiakbar, Ahmedov Azamat
doaj +1 more source