Results 91 to 100 of about 2,144 (170)

Greenland Ice Sheet surface roughness from Ku- and Ka-band radar altimetry surface echo strengths [PDF]

The Cryosphere
Surface roughness is an important factor to consider when modelling mass changes at the Greenland Ice Sheet (GrIS) surface (i.e., surface mass balance, SMB).
K. M. Scanlan, A. Rutishauser, S. B. Simonsen   +2 more
doaj   +1 more source

From LIDAR Point Clouds to 3D Building Models

, 2009
High quality and dense sampling are two major properties of recent airborne LIDAR data which are still improving. In this thesis a novel approach for generating 3D building models from LIDAR data is presented. It consists of four major parts: filtering
Arefi, Hossein
core  

ICESAT full waveform altimetry compared to ariborne laser altimetry over The Netherlands [PDF]

, 2007
Since 2003 the spaceborne laser altimetry system on board of NASA’s Ice, Cloud and land Elevation Satellite (ICESat) has acquired a large world-wide database of full waveform data organized in 15 products.
Lindenbergh, Roderik, Vosselman, G.; id_orcid, Duong, Hieu, Pfeifer, Norbert   +3 more
core  

3D perceptual organization of laser altimetry data

, 2001
Perceptual organization is to group sensory primitives arising from a common underlying cause by imposing structural organi-zation on sensory data. It has been emphasized as a robust intermediate-level grouping process toward object recognition and ...
Impyeong Lee, Toni Schenk
core  

Improving the geometry of Kaguya extended mission data through refined orbit determination using laser altimetry. [PDF]

Icarus, 2020
Goossens S, Mazarico E, Ishihara Y, Archinal B, Gaddis L.   +4 more
europepmc   +1 more source

TanDEM-X: Block adjustment of interferometric height models

, 2009
The TanDEM-X mission will derive a global digital elevation model (DEM) with satellite SAR interferometry. The aimed accuracies are an absolute, resp. relative height error of 10m resp. 2m for 90% of the data.
Roth, Achim, Huber, Martin, Gruber, Astrid, Wessel, Birgit   +3 more
core  

Progression of the surge in the Negribreen Glacier System from two years of ICESat-2 measurements

Journal of Glaciology
The state-of-the-art measurement capabilities of ICESat-2 allow high spatiotemporal resolution of complex ice-dynamic processes that occur during a surge.
Thomas Trantow, Ute Christina Herzfeld
doaj   +1 more source

Estimating effective elasticity in grounding zones of the Ross Ice Shelf with tidal flexure from ICESat-2

Journal of Glaciology
The grounding zones of Antarctic ice shelves are among the continent’s most dynamic regions, where floating ice shelves buttress grounded upstream ice and tidal forcing drives cyclic flexure at the ice–ocean–bed interface.
Faye Elgart, Brent Minchew, Colin R. Meyer   +2 more
doaj   +1 more source

An Efficient Algorithm for the Synthesis of Laser Altimetry Waveforms

, 2000
Airborne and spaceborne laser ranging is an emerging technology for capturing data on physical surfaces. An ever increasing number of applications takes advantage of the dense sampling, the high accuracy, and the direct way to obtain 3-D surface points ...
Csatho, Beata, Filin, Sagi
core  

Mapping Ice Sheet Topography with Laser Altimetry in Greenland

, 1996
The prime objective of NASA's Arctic Ice Mapping project is to provide accurate ice sheet elevation data for the purpose of change detection. The airborne laser altimetry system, ATM, developed by NASA, was successfully used in several missions in ...
Csatho, Beata, Krabill, William B., Thomas, Robert H.   +2 more
core