Results 71 to 80 of about 1,159,554 (218)

EVALUATION OF ASTER GDEM V3 USING ICESAT LASER ALTIMETRY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Abstract. 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 Radiometer) Global Digital Elevation Model (GDEM) V3 elevation products produced by NASA/METI ...
Carabajal, Claudia, Boy, J.-P.
openaire   +5 more sources

Estimativa da altura da vegetação utilizando dados Airborne Laser Scanner [PDF]

, 2005
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.Esta pesquisa foi conduzida buscando estimar a vegetação uma altura, ou mais especificamente do estrato arbóreo, que contém
Alixandrini Junior, Mauro José
core  

Multicriteria Selection of Elevation Control and Image Tie Points for Block Adjustment of ZY-3 Images and ICESat Data in Antarctica

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Integrating optical satellite images and laser altimetry data is essential to achieve high-accuracy mapping, especially in areas without ground control points.
Shijie Liu, Zhida Bai, Xiaofeng Gao, Huan Xie, Yanmin Jin, Hao Wu, Xiaohua Tong   +6 more
doaj   +1 more source

Cross-validation of the DEM obtained using LuTan-1 SAR satellites: A case study in Guyuan County, China [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The digital elevation model (DEM) based on synthetic aperture radar interferometry (SAR, InSAR) technology have become an important data source for large-scale topographic mapping, but their characteristics vary with satellite systems and methodologies ...
X. Tang, Y. Lu, T. Li, X. Zhou, J. Lu, X. Zhang, X. Zhang, X. Qiu, J. Chen   +8 more
doaj   +1 more source

A New Global Hypsometric Data Set Derived From Satellite and Geometric Methods for Reservoir Storage Estimation

Water Resources Research, Volume 62, Issue 9, September 2026.
Abstract Reservoir hypsometric relationships are crucial in determining water storage changes and modeling hydrological processes. Previous studies have demonstrated that uncertainties in reservoir surface area observations are a primary source of error in satellite‐derived storage estimates.
Ngoc T. Nguyen, Tien L. T. Du, Hyongki Lee, Hong‐Yi Li, Duong D. Bui, Hahn Chul Jung, Kuo‐Hsin Tseng   +6 more
wiley   +1 more source

Proposta metodologica para confecção de base cartográfica a partir de dados oriundos do Sistema Laser Scanner [PDF]

, 2005
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.A presente pesquisa demonstra a metodologia para confecção de uma Base Cartográfica de grande escala, a partir de uma nova ...
Sloboda, Luana
core  

Ice-sheet elevations from across-track processing of airborne interferometric radar altimetry [PDF]

, 2009
Interferometric Radar Altimeters (IRA's) use dual receive antennas to overcome one of the spatial limitations of pulse-limited altimeters. In a conventional IRA measurement, the range and across-track direction of a scatterer are determined using the ...
Cullen, R., Helm, Veit, Cullen, R, Wingham, D. J., Wingham, DJ, Hawley, R. L., Hawley, RL, Helm, V, Sheperd, A., Shepherd, A   +9 more
core   +1 more source

First Assessment of ICESat‐2 Summer Sea Ice Freeboard With Airborne Validation

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract ICESat‐2 has demonstrated solid performance in retrieving sea ice freeboard during winter, when sea ice surface types are well‐defined and leads provide reliable sea surface height references. Summer retrievals are challenging because melt ponds are not explicitly distinguished in the ATL07 surface classification and may be identified as ice ...
Ellen M. Buckley, Sahra Kacimi, Melinda Webster, Siddarth Harrison, Kutalmis Saylam, Nathan T. Kurtz, Rachel L. Tilling   +6 more
wiley   +1 more source

Estimation of tree lists from airborne laser scanning by combining single-tree and area-based methods [PDF]

, 2010
Individual tree crown segmentation from airborne laser scanning (ALS) data often fails to detect all trees depending on the forest structure. This paper presents a new method to produce tree lists consistent with unbiased estimates at area level.
Olofsson, Kenneth, Lindberg, Eva, Holmgren, Johan, Wallerman, Jörgen, Olsson, Håkan   +4 more
core   +1 more source

Spatial Variability and Drivers of Salt Marsh Cliff Erosion in the Dutch Wadden Sea: From Observation to Simulation

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 8, August 2026.
Abstract Lateral erosion of salt marshes via cliff retreat is a primary cause of global marsh loss, driven by interactions between hydrodynamics, sediment, and vegetation. While previous studies show a linear relationship between wave power and cliff retreat, models based on this relationship are largely unvalidated for short‐term (sub‐yearly) and ...
S. Dzimballa, V. Kitsikoudis, P. W. J. M. Willemsen, E. O. Folmer, B. W. Borsje, I. Y. Georgiou, M. C. Bregman, D. C. M. Augustijn   +7 more
wiley   +1 more source