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The Algorithm Theoretical Basis Document for the Derivation of Range and Range Distributions from Laser Pulse Waveform Analysis for Surface Elevations, Roughness, Slope, and Vegetation HeightsThe primary purpose of the GLAS instrument is to detect ice elevation changes over time which are used to derive changes in ice volume. Other objectives include measuring sea ice freeboard, ocean and land surface elevation, surface roughness, and canopy heights over land. This Algorithm Theoretical Basis Document (ATBD) describes the theory and implementation behind the algorithms used to produce the level 1B products for waveform parameters and global elevation and the level 2 products that are specific to ice sheet, sea ice, land, and ocean elevations respectively. These output products, are defined in detail along with the associated quality, and the constraints, and assumptions used to derive them.
Document ID
Document Type
Technical Memorandum (TM)
Brenner, Anita C.
(Sigma Space Corp. Lanham, MD, United States)
Zwally, H. Jay
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bentley, Charles R.
(Wisconsin Univ. Madison, WI, United States)
Csatho, Bea M.
(Buffalo Univ. NY, United States)
Harding, David J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hofton, Michelle A.
(Maryland Univ. College Park, MD, United States)
Minster, Jean-Bernard
(California Univ. San Diego, CA, United States)
Roberts, LeeAnne
(Stinger Ghaffarian Technologies, Inc. (SGT, Inc.) Greenbelt, MD, United States)
Saba, Jack L.
(Science Systems and Applications, Inc. Lanham, MD, United States)
Thomas, Robert H.
(Rht Ice Consulting Chincoteague Island, Virginia, United State)
Yi, Donghui
(Stinger Ghaffarian Technologies, Inc. (SGT, Inc.) Greenbelt, MD, United States)
Date Acquired
August 26, 2013
Publication Date
August 30, 2012
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA/TM-2012-208641/Vol 7
Distribution Limits
Public Use Permitted.
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