Results 21 to 30 of about 827 (179)

FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
During the last two decades surface elevation data have been gathered over the Greenland Ice Sheet (GrIS) from a variety of different sensors including spaceborne and airborne laser altimetry, such as NASA’s Ice Cloud and land Elevation Satellite ...
T. Schenk, B. M. Csatho, K. Duncan
doaj   +1 more source

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

Remote 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, Bin Zhang, Xinming Tang, Guoyuan Li, Xiaoqing Zhou, Liuru Hu, Xianhui Dou   +6 more
doaj   +1 more source

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

Remote 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

Laser altimetry measurements from aircraft and spacecraft [PDF]

Proceedings of the IEEE, 1989
The techniques involved in the design and application of laser altimeter instruments are reviewed, including a description of the instrument subsystems required for the range and waveform measurements. Laser pulse transmitters based on the relatively novel technology of diode-pumped solid-state lasers are considered.
openaire   +1 more source

The Reference Elevation Model of Antarctica [PDF]

The 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, I. M. Howat, C. Porter, B. E. Smith, M.-J. Noh, P. Morin   +5 more
doaj   +1 more source

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

Remote 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, Julian Vrbancich, Wolfgang Lieff   +2 more
doaj   +1 more source

A Weighted Image-Point-Measurement Method of Laser Altimetry Points for Improving Laser-Altimetry-Data-Assisted Positioning Accuracy of Small-Satellite Images

Remote Sensing
For small-satellite imagery, traditional image points derived from the direct back-projection of laser altimetry points onto the imagery often exhibit deviations of tens of pixels or more, owing to the relatively limited attitude and orbit determination ...
Wenping Song, Ducheng Wu, Luyao Wang, Miao Li, Jie Han, Caitong Cai, Yang Wu, Fen Tang, Lei Wu   +8 more
doaj   +1 more source

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

The 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, C. Xu, J. Xie, X. Yang, X. Yang, X. Lv, X. Lv   +6 more
doaj   +1 more source

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

The 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, J. L. Bamber, J. A. Griggs   +2 more
doaj   +1 more source

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

The 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, G. Li, G. Li, X. Tang, X. Tang, X. Tang, X. Gao, X. Gao, X. Gao, J. P. Huang, J. P. Huang, J. Chen, J. Chen, J. Lu, J. Lu   +14 more
doaj   +1 more source