ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction
NASAs Ice, Cloud, and land Elevation Satellite (ICESat), which operated between 2003 and 2009, made the first satellite-based global lidar measurement of Earths ice sheet elevations, sea-ice thickness and vegetation canopy structure. The primary instrument on ICESat was the Geoscience Laser Altimete...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20170005227 2023-05-15T13:35:23+02:00 ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction Dimarzio, John P. Neumann, Gregory A. Sun, Xiaoli Brunt, Kelly M. Harding, David J. Fricker, Helen A. Borsa, Adrian A. Yi, Donghui Paolo, Fernando S. Abshire, James B. Unclassified, Unlimited, Publicly available July 25, 2017 application/pdf http://hdl.handle.net/2060/20170005227 unknown Document ID: 20170005227 http://hdl.handle.net/2060/20170005227 Copyright, Public use permitted CASI Earth Resources and Remote Sensing Numerical Analysis GSFC-E-DAA-TN43299 IEEE Transactions on Geoscience and Remote Sensing (ISSN 0196-2892) (e-ISSN 1558-0644); 55; 10; 5440-5454 2017 ftnasantrs 2019-07-20T23:33:03Z NASAs Ice, Cloud, and land Elevation Satellite (ICESat), which operated between 2003 and 2009, made the first satellite-based global lidar measurement of Earths ice sheet elevations, sea-ice thickness and vegetation canopy structure. The primary instrument on ICESat was the Geoscience Laser Altimeter System (GLAS), which measured the distance from the spacecraft to Earths surface via the roundtrip travel time of individual laser pulses. GLAS utilized pulsed lasers and a direct detection receiver consisting of a silicon avalanche photodiode (SiAPD) and a waveform digitizer. Early in the mission, the peak power of the received signal from snow and ice surfaces was found to span a wider dynamic range than planned, often exceeding the linear dynamic range of the GLAS 1064-nm detector assembly. The resulting saturation of the receiver distorted the recorded signal and resulted in range biases as large as 50 cm for ice and snow-covered surfaces. We developed a correction for this saturation range bias based on laboratory tests using a spare flight detector, and refined the correction by comparing GLAS elevation estimates to those derived from Global Positioning System (GPS) surveys over the calibration site at the salar de Uyuni, Bolivia. Applying the saturation correction largely eliminated the range bias due to receiver saturation for affected ICESat measurements over Uyuni and significantly reduced the discrepancies at orbit crossovers located on flat regions of the Antarctic ice sheet. Other/Unknown Material Antarc* Antarctic Ice Sheet Sea ice NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing Numerical Analysis |
spellingShingle |
Earth Resources and Remote Sensing Numerical Analysis Dimarzio, John P. Neumann, Gregory A. Sun, Xiaoli Brunt, Kelly M. Harding, David J. Fricker, Helen A. Borsa, Adrian A. Yi, Donghui Paolo, Fernando S. Abshire, James B. ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction |
topic_facet |
Earth Resources and Remote Sensing Numerical Analysis |
description |
NASAs Ice, Cloud, and land Elevation Satellite (ICESat), which operated between 2003 and 2009, made the first satellite-based global lidar measurement of Earths ice sheet elevations, sea-ice thickness and vegetation canopy structure. The primary instrument on ICESat was the Geoscience Laser Altimeter System (GLAS), which measured the distance from the spacecraft to Earths surface via the roundtrip travel time of individual laser pulses. GLAS utilized pulsed lasers and a direct detection receiver consisting of a silicon avalanche photodiode (SiAPD) and a waveform digitizer. Early in the mission, the peak power of the received signal from snow and ice surfaces was found to span a wider dynamic range than planned, often exceeding the linear dynamic range of the GLAS 1064-nm detector assembly. The resulting saturation of the receiver distorted the recorded signal and resulted in range biases as large as 50 cm for ice and snow-covered surfaces. We developed a correction for this saturation range bias based on laboratory tests using a spare flight detector, and refined the correction by comparing GLAS elevation estimates to those derived from Global Positioning System (GPS) surveys over the calibration site at the salar de Uyuni, Bolivia. Applying the saturation correction largely eliminated the range bias due to receiver saturation for affected ICESat measurements over Uyuni and significantly reduced the discrepancies at orbit crossovers located on flat regions of the Antarctic ice sheet. |
format |
Other/Unknown Material |
author |
Dimarzio, John P. Neumann, Gregory A. Sun, Xiaoli Brunt, Kelly M. Harding, David J. Fricker, Helen A. Borsa, Adrian A. Yi, Donghui Paolo, Fernando S. Abshire, James B. |
author_facet |
Dimarzio, John P. Neumann, Gregory A. Sun, Xiaoli Brunt, Kelly M. Harding, David J. Fricker, Helen A. Borsa, Adrian A. Yi, Donghui Paolo, Fernando S. Abshire, James B. |
author_sort |
Dimarzio, John P. |
title |
ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction |
title_short |
ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction |
title_full |
ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction |
title_fullStr |
ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction |
title_full_unstemmed |
ICESat GLAS Altimetry Measurements: Received Signal Dynamic Range and Saturation Correction |
title_sort |
icesat glas altimetry measurements: received signal dynamic range and saturation correction |
publishDate |
2017 |
url |
http://hdl.handle.net/2060/20170005227 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Ice Sheet Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20170005227 http://hdl.handle.net/2060/20170005227 |
op_rights |
Copyright, Public use permitted |
_version_ |
1766064995973464064 |