Results 31 to 40 of about 313 (137)

Reconstruction and Evaluation of DEMs From Bistatic Tandem-X SAR in Mountainous and Coastal Areas of China [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
TerraSAR-X add-on for Digital Elevation Measurements (TanDEM-X) mission is designed to generate 3-D images of the Earth as the first bistatic synthetic aperture radar (SAR).
Peng Li, Zhenhong Li, Keren Dai, Yasir Al-Husseinawi, Wanpeng Feng, Houjie Wang   +5 more
doaj   +3 more sources

Generation and Assessment of Digital Elevation Models by Combining Sentinel-1A and Sentinel-1B Data in Mountain Glacier Area

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The launch of Sentinel-1 satellite introduces a novel approach for synthetic aperture radar (SAR) interferometry (InSAR). However, its capabilities for topographic mapping are reportedly limited.
Lili Yan, Hongxing Li, Xiaohua Hao, Jian Wang, Zhenliang Yin, Junyan Liu   +5 more
doaj   +2 more sources

Evaluation of Different Digital Elevation Models (DEMs) for Geospatial Applications: A Case Study of Ibadan, Nigeria. [PDF]

African Journal on Land Policy and Geospatial Sciences
Context and background Digital elevation models (DEMs) are essential tools for a wide range of scientific and geospatial applications, providing critical data for elevation and terrain analysis.
Ibrahim Olatunji Raufu
doaj   +2 more sources

Towards ice-thickness inversion: an evaluation of global digital elevation models (DEMs) in the glacierized Tibetan Plateau [PDF]

The Cryosphere, 2022
Accurate estimates of regional ice thickness, which are generally produced by ice-thickness inversion models, are crucial for assessments of available freshwater resources and sea level rise.
W. Chen, W. Chen, T. Yao, G. Zhang, F. Li, F. Li, G. Zheng, G. Zheng, Y. Zhou, F. Xu, F. Xu   +10 more
doaj   +1 more source

VERTICAL ACCURACY ASSESSMENT FOR OPEN-SOURCE DIGITAL ELEVATION MODEL: A CASE STUDY OF BASRAH CITY, IRAQ [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
In the diverse domains of earth observation, elevation data are essential for a wide range of applications with various technical requirements and use cases.
H. Tahir, A. H. M. Din
doaj   +1 more source

Global Digital Elevation Model Comparison Criteria: An Evident Need to Consider Their Application

ISPRS International Journal of Geo-Information, 2023
From an extensive search of papers related to the comparison of Global Digital Elevation Models (hereinafter GDEMs), an analysis is carried out that aims to answer several questions such as: Which GDEMs have been compared? Where have the comparisons been
Carlos López-Vázquez, Francisco Javier Ariza-López   +1 more
doaj   +1 more source

Avaliação da acurácia vertical dos modelos digitais de elevação SRTM, Alos, World 3D, Nasadem para as províncias geomorfológicas no estado do Rio Grande do Sul [PDF]

, 2023
Esta pesquisa teve por objetivo realizar uma análise de acurácia posicional vertical comparativa entre os Modelos Digitais de Elevação (MDE) de abrangência global, disponíveis gratuitamente nos programas NASADEM, ALOS WORLD 3D (AW3D30) e SRTM.
Machado, Morvana
core   +1 more source

Glacier Changes in India’s Dhauliganga Catchment over the Past Two Decades

Remote Sensing, 2022
The rapid melting of glaciers has led to severe glacial-hydrological hazards in the Himalayas. An extreme example occurred on 7 February 2021, when a catastrophic mass flow descended from the Ronti glacier at Chamoli, Indian Himalaya, causing widespread ...
Nauman Ali, Qinghua Ye, Xueqin Zhang, Xinhui Ji, Yafan Hu, Liping Zhu, Arslan Ali   +6 more
doaj   +1 more source

Vertical accuracy assessment of fusion Global Digital Elevation Model (NASADEM and MERIT) over Peninsular Malaysia / Nur fatihah Mohd Rosli [PDF]

, 2023
This study focuses on to assess the vertical accuracy of the fusion Global Digital Elevation Model (GDEM) comprising NASADEM and MERIT datasets over Peninsular Malaysia.
Mohd Rosli, Nur Fatihah
core  

Extraction of Drainage Networks in the Masamba Watershed Using NASADEM

Journal of Asian Geography
The drainage network consists of all river channels that flow toward a reference point. It is bounded by a topographically defined distribution of drainage. The network begins with first-order streams that have no tributaries. Within a drainage network, one or more drainage patterns may be present.
Sudirman Nganro, null Mohd Amirul Mahamud, null Katsuhiko Yonezaki, null Arifuddin Akil, null Muhammad Syahrir, null Andi Arifuddin Iskandar, null Ramdania Tenreng, null I Putu Artawan, null Andi Muspida, null Ahmad Muhajir, null Arwin Tamimi, null Andi Mangga Barani   +11 more
openaire   +1 more source