Results 21 to 30 of about 765 (166)

On-Orbit Geometric Calibration and Accuracy Validation for Laser Footprint Cameras of GF-7 Satellite

open access: yesRemote Sensing, 2022
The Gaofen-7 (GF-7) satellite uses a two-beam laser altimetry system in which each beam is equipped with a laser footprint camera (LFC) to provide geometric processing of the laser footprint images that assist in optical image stereo mapping.
Jiyi Chen   +6 more
doaj   +1 more source

Satellite Remote Sensing of the Greenland Ice Sheet Ablation Zone: A Review

open access: yesRemote Sensing, 2019
The Greenland Ice Sheet is now the largest land ice contributor to global sea level rise, largely driven by increased surface meltwater runoff from the ablation zone, i.e., areas of the ice sheet where annual mass losses exceed gains.
Matthew G. Cooper, Laurence C. Smith
doaj   +1 more source

The Reference Elevation Model of Antarctica [PDF]

open access: yesThe Cryosphere, 2019
The Reference Elevation Model of Antarctica (REMA) is the first continental-scale digital elevation model (DEM) at a resolution of less than 10 m.
I. M. Howat   +5 more
doaj   +1 more source

Demonstration of Two Portable Scanning LiDAR Systems Flown at Low-Altitude for Investigating Coastal Sea Surface Topography

open access: yesRemote Sensing, 2011
We demonstrate the efficacy of a commercial portable 2D laser scanner (operating at a wavelength close to 1,000 nm) deployed from a fixed-wing aircraft for measuring the sea surface topography and wave profiles over coastal waters.
Jorg Hacker   +2 more
doaj   +1 more source

Brief communication "Importance of slope-induced error correction in volume change estimates from radar altimetry" [PDF]

open access: yesThe Cryosphere, 2012
In deriving elevation change rates (d<I>H</I>/d<I>t</I>) from radar altimetry, the slope-induced error is usually assumed to cancel out in repeat measurements.
R. T. W. L. Hurkmans   +2 more
doaj   +1 more source

POINTING ANGLE CALIBRATION OF ZY3-02 SATELLITE LASER ALTIMETER USING TERRAIN MATCHING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
After GLAS (Geo-science Laser Altimeter System) loaded on the ICESat (Ice Cloud and land Elevation Satellite), satellite laser altimeter attracts more and more attention.
G. Li   +14 more
doaj   +1 more source

SPACE-BORNE LASER ALTIMETER GEOLOCATION ERROR ANALYSIS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
This paper reviews the development of space-borne laser altimetry technology over the past 40 years. Taking the ICESAT satellite as an example, a rigorous space-borne laser altimeter geolocation model is studied, and an error propagation equation is ...
Y. Wang   +4 more
doaj   +1 more source

Modeling Uncertainty of GEDI Clear-Sky Terrain Height Retrievals Using a Mixture Density Network

open access: yesRemote Sensing, 2023
Early spaceborne laser altimetry mission development starts in pre-phase A design, where diverse ideas are evaluated against mission science requirements.
Jonathan Sipps, Lori A. Magruder
doaj   +1 more source

Positioning Improvement for Spaceborne Laser Footprint Based on Precisely Terrain Data [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Spaceborne laser altimetry represents a novel active remote sensing technology applicable to earth observation, which together with imaging spectroscopy and synthetic aperture radar as a core technology for data acquisition in the earth observation ...
C. Xu   +6 more
doaj   +1 more source

A new DEM of the Austfonna ice cap by combining differential SAR interferometry with ICESat laser altimetry [PDF]

open access: yesPolar Research, 2012
We present a new digital elevation model (DEM) of the Austfonna ice cap in the Svalbard Archipelago, Norwegian Arctic. Previous DEMs derived from synthetic aperture radar (SAR) and optical shape-from-shading have been tied to airborne radio echo-sounding
Geir Moholdt, Andreas Kääb
doaj   +1 more source

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