Results 181 to 190 of about 4,497 (220)

Comprehensive Evaluation of the ICESat-2 ATL08 Terrain Product

IEEE Transactions on Geoscience and Remote Sensing, 2021
Current spaceborne lidar Ice, Cloud, and Land Elevation Satellite (ICESat)-2 provides ATL08 product for global terrain height, whose quality properties are yet to be fully understood. This article performs a comprehensive evaluation on its quality by using 3-D elevation program (3DEP) digital elevation model (DEM) and hundreds of survey marks of two ...
Xiangxi Tian, Jie Shan
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The ICESat-2 Laser Altimetry Mission

Proceedings of the IEEE, 2010
Satellite and aircraft observations have revealed that remarkable changes in the Earth's polar ice cover have occurred in the last decade. The impacts of these changes, which include dramatic ice loss from ice sheets and rapid declines in Arctic sea ice, could be quite large in terms of sea level rise and global climate.
Waleed Abdalati, H. Jay Zwally, Robert Bindschadler, Beáta Csathó, Sinéad Louise Farrell, Helen Amanda Fricker, David J. Harding, Ronald Kwok, Michael A. Lefsky, Thorsten Markus, Alexander Marshak, Thomas Neumann 0009, Stephen P. Palm, Bob E. Schutz, Ben Smith, James D. Spinhirne, Charles E. Webb   +16 more
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ICESat-2 laser Nd:YVO4 amplifier

Components and Packaging for Laser Systems IV, 2018
We report on the cause and corrective actions of three amplifier crystal fractures in the space-qualified laser systems used in NASA Goddard Space Flight Center’s (GSFC) Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2). The ICESat-2 lasers each contain three end-pumped Nd:YVOO4 amplifier stages.
Eric H. Baker, Babak Farrokh, Jonathan A. Salem, John F. Cavanaugh, Liqin L. Wang, Charles C. He, Michael Bay, Elisavet Troupaki, Mark S. Pronko, John Iskander, Elias Fakhoury, Greg Witt, Nigel Martin, Viatcheslav Litvinovitch, Ryan E. Edwards, Patrick M. Burns, Nicholas Sawruk   +16 more
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ICESat-2 laser technology development

SPIE Proceedings, 2013
A number of ICESat-2 system requirements drove the technology evolution and the system architecture for the laser transmitter Fibertek has developed for the mission.. These requirements include the laser wall plug efficiency, laser reliability, high PRF (10kHz), short-pulse (
Ryan Edwards, Nick W. Sawruk, Floyd E. Hovis, Patrick Burns, Theodore Wysocki, Joe Rudd, Brooke Walters, Elias Fakhoury, Vincent Prisciandaro   +8 more
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ICESat-2 ATLAS telescope testing

2015 IEEE Aerospace Conference, 2015
Many lessons were learned in the comprehensive testing of the one meter Beryllium flight telescope for the ICESat-2 mission. This paper will focus on testing areas of encircled energy analysis, plate scale measurements, and boresight alignment for alignment of fiber optic cables.
John Hagopian, Tyler Evans, Matt Bolcar, Bente Eegholm, Erich De Leon, Patrick Thompson, David Vaughnn   +6 more
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ICESAT-2 altimetry for coastal MSS improvement

2023
Radar altimeters have traditioally been used for the determination of the mean sea surface to centimeter accuracy. However close to the coast the MSS degrade because of the lack of valid altimetry observations and because of the land contamination and the altimeter footprint size.
Vrettou, Artemis, Andersen, Ole Baltazar
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Canopy and Terrain Height Retrievals with ICESat-2: A First Look [PDF]

Remote Sensing, 2019
NASA’s Ice, Cloud and Land Elevation Satellite-2 (ICESat-2) launched in fall 2018 and has since collected continuous elevation data over the Earth’s surface. The primary scientific objective is to measure the cryosphere for studies related to land ice and sea ice characteristics.
Lori A Magruder
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ICESat-2 Altimetry of the Open Ocean

2019
Abstract: The Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) has been developed primarily to measure the height of the Earth’s ice at high spatial resolution but it also provides satellite ocean altimetry unlike any other. To achieve high resolution it uses the Advanced Topographic Laser Altimeter System (ATLAS), a photon-counting, multi-beam ...
Morison, James, Dickinson, Suzanne, Hancock, David, Roberts, Leeanne, Robbins, John   +4 more
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ICESat-2 Precision Orbit Determination Performance

2020
<p>The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) mission launched on September 15<sup>th</sup>, 2018, with the primary goal of measuring ice sheet topographic change. The fundamental measurement used to achieve mission science objectives is the geolocation of individual photon bounce points.
Taylor Thomas, Scott Luthcke, Teresa Pennington, Joseph Nicholas, David Rowlands, Timothy Rebold   +5 more
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