Results 181 to 190 of about 4,544 (210)

A design on calibration and validation of ICESat data

Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05., 2005
The accurate geolocation (horizontal and vertical position) of a laser altimeter's surface returns (the spots from which the laser energy reflects on the earth's surface) is a critical issue in the scientific application of these data. The geolocation of laser surface return is computed from the laser-altimeter surface range observations along with the
Chunbo Fan, Jiancheng Li
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Operation icebridge: Using instrumented aircraft to bridge the observational gap between icesat and icesat-2

2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
Operation IceBridge, a six-year NASA mission, is the largest airborne survey of Earth's polar ice ever flown. Data collected during IceBridge will help scientists bridge the gap in polar observations between NASA's Ice, Cloud and Land Elevation Satellite (ICESat), in orbit from 2003 to 2009, and ICESat-2, planned for launch in late 2015, making ...
Michael Studinger, Lora Koenig, Seelye Martin, John G. Sonntag   +3 more
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ICESat GLAS Data for Urban Environment Monitoring

IEEE Transactions on Geoscience and Remote Sensing, 2011
Although the Geoscience Laser Altimeter System (GLAS) onboard the NASA Ice, Cloud and Land Elevation Satellite was not designed for urban applications, its 3-D measurement capability over the globe makes it a nice feature for consideration in monitoring urban heights. However, this has not been previously done. In this paper, we report some preliminary
Peng Gong 0002, Zhan Li 0001, Huabing Huang, Guoqing Sun, Lei Wang 0170   +4 more
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ICESat Geolocation Validation Using Airborne Photography

IEEE Transactions on Geoscience and Remote Sensing, 2010
NASA's ICESat satellite launched in January of 2003, carrying the Geoscience Laser Altimeter. During the initial phase of this mission, many validation procedures were implemented to verify the accuracy associated with a variety of altimetry-derived data products.
Lori A. Magruder, Randall L. Ricklefs, Eric C. Silverberg, Matthew F. Horstman, Muhammad A. Suleman, Bob E. Schutz   +5 more
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Surface-Water-Level Changes During 2003–2019 in Australia Revealed by ICESat/ICESat-2 Altimetry and Landsat Imagery

IEEE Geoscience and Remote Sensing Letters, 2021
Surface-water-level changes reflect Earth’s water resource variations ( e.g. , trends and fluctuations) and they are helpful to understand potential drivers ( e.g. , climate change and human activities). Currently, Australia is facing serious water crisis owing to rainfall shortage and climate change, and national-scale data set on surface-water-level ...
Nan Xu 0008, Yue Ma 0002, Wenhao Zhang, Xiao Hua Wang 0003   +3 more
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A Two-Stage Approach for Decomposition of ICESat Waveforms

IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008
Decomposing a waveform into distinct components by fitting a mixture of Gaussians impacts the ultimate interpretation of the return waveform, because the resulting parameter estimates of the Gaussian mixture directly affect the understanding of vertical structure within laser footprints. Decomposing the waveform into a mixture of Gaussians involves two
Jinha Jung, Melba M. Crawford
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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 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 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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