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International Journal of Remote Sensing Volume 16, 1995 - Issue 7
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Original Articles

Accuracy of airborne laser altimetry over the Greenland ice sheet

W. B. Krabill NASA Goddard Space Flight Center, Wallops Flight Facility, Laboratory for Hydrospheric Processes, Wallops Island, VA, 233337, USA
,
R. H. Thomas NASA Headquarters, Code YS, 2 Independence Square, 300 E St. SW, Washington, DC, 20546, USA
,
C. F. Martin EG G Washington Analytical Services Corporation, Wallops Flight Facility, Building N-159, Wallops Island, VA, 233337, USA
,
R. N. Swift EG G Washington Analytical Services Corporation, Wallops Flight Facility, Building N-159, Wallops Island, VA, 233337, USA
&
E. B. Frederick EG G Washington Analytical Services Corporation, Wallops Flight Facility, Building N-159, Wallops Island, VA, 233337, USA
Pages 1211-1222 | Received 15 Feb 1994, Accepted 03 Nov 1994, Published online: 03 May 2007
 
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Abstract

During September 1991, April 1992 and June/July 1993, a NASA P–3 aircraft, equipped with a scanning laser altimeter, flew numerous transects of the Greenland ice sheet. The aeroplane location was measured precisely using dilTerential Global Positioning System (GPS) surveying techniques, allowing all altimetry data to be converted into measurements of ice-surface elevation relative to the Earth ellipsoid. Results from flight data indicate that icc-surface elevations can be reliably measured to an accuracy of ∼20cm (and possibly to ∼s lOcm) over baselines of more than seven hundred kilometres.

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