The Geoscience Laser Altimetry/Ranging System (GLARS)
The Geoscience Laser Altimetry Ranging System (GLARS) is a highly precise distance measurement system to be used for making extremely accurate geodetic observations from a space platform. It combines the attributes of a pointable laser ranging system making observations to cube corner retroreflector...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19870005254 2023-05-15T16:40:41+02:00 The Geoscience Laser Altimetry/Ranging System (GLARS) Abshire, J. B. Garvin, J. B. Degnan, J. J. Cohen, S. C. Bufton, J. L. Unclassified, Unlimited, Publicly available Sep 1, 1986 application/pdf http://hdl.handle.net/2060/19870005254 unknown Document ID: 19870005254 Accession ID: 87N14687 http://hdl.handle.net/2060/19870005254 No Copyright CASI LASERS AND MASERS NASA-TM-87803 REPT-87B0018 NAS 1.15:87803 1986 ftnasantrs 2019-07-21T09:33:06Z The Geoscience Laser Altimetry Ranging System (GLARS) is a highly precise distance measurement system to be used for making extremely accurate geodetic observations from a space platform. It combines the attributes of a pointable laser ranging system making observations to cube corner retroreflectors placed on the ground with those of a nadir looking laser altimeter making height observations to ground, ice sheet, and oceanic surfaces. In the ranging mode, centimeter-level precise baseline and station coordinate determinations will be made on grids consisting of 100 to 200 targets separated by distances from a few tens of kilometers to about 1000 km. These measurements will be used for studies of seismic zone crustal deformations and tectonic plate motions. Ranging measurements will also be made to a coarser, but globally distributed array of retroreflectors for both precise geodetic and orbit determination applications. In the altimetric mode, relative height determinations will be obtained with approximately decimeter vertical precision and 70 to 100 meter horizontal resolution. The height data will be used to study surface topography and roughness, ice sheet and lava flow thickness, and ocean dynamics. Waveform digitization will provide a measure of the vertical extent of topography within each footprint. The planned Earth Observing System is an attractive candidate platform for GLARS since the GLAR data can be used both for direct analyses and for highly precise orbit determination needed in the reduction of data from other sensors on the multi-instrument platform. (1064, 532, and 355 nm)Nd:YAG laser meets the performance specifications for the system. Other/Unknown Material Ice Sheet NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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LASERS AND MASERS |
spellingShingle |
LASERS AND MASERS Abshire, J. B. Garvin, J. B. Degnan, J. J. Cohen, S. C. Bufton, J. L. The Geoscience Laser Altimetry/Ranging System (GLARS) |
topic_facet |
LASERS AND MASERS |
description |
The Geoscience Laser Altimetry Ranging System (GLARS) is a highly precise distance measurement system to be used for making extremely accurate geodetic observations from a space platform. It combines the attributes of a pointable laser ranging system making observations to cube corner retroreflectors placed on the ground with those of a nadir looking laser altimeter making height observations to ground, ice sheet, and oceanic surfaces. In the ranging mode, centimeter-level precise baseline and station coordinate determinations will be made on grids consisting of 100 to 200 targets separated by distances from a few tens of kilometers to about 1000 km. These measurements will be used for studies of seismic zone crustal deformations and tectonic plate motions. Ranging measurements will also be made to a coarser, but globally distributed array of retroreflectors for both precise geodetic and orbit determination applications. In the altimetric mode, relative height determinations will be obtained with approximately decimeter vertical precision and 70 to 100 meter horizontal resolution. The height data will be used to study surface topography and roughness, ice sheet and lava flow thickness, and ocean dynamics. Waveform digitization will provide a measure of the vertical extent of topography within each footprint. The planned Earth Observing System is an attractive candidate platform for GLARS since the GLAR data can be used both for direct analyses and for highly precise orbit determination needed in the reduction of data from other sensors on the multi-instrument platform. (1064, 532, and 355 nm)Nd:YAG laser meets the performance specifications for the system. |
format |
Other/Unknown Material |
author |
Abshire, J. B. Garvin, J. B. Degnan, J. J. Cohen, S. C. Bufton, J. L. |
author_facet |
Abshire, J. B. Garvin, J. B. Degnan, J. J. Cohen, S. C. Bufton, J. L. |
author_sort |
Abshire, J. B. |
title |
The Geoscience Laser Altimetry/Ranging System (GLARS) |
title_short |
The Geoscience Laser Altimetry/Ranging System (GLARS) |
title_full |
The Geoscience Laser Altimetry/Ranging System (GLARS) |
title_fullStr |
The Geoscience Laser Altimetry/Ranging System (GLARS) |
title_full_unstemmed |
The Geoscience Laser Altimetry/Ranging System (GLARS) |
title_sort |
geoscience laser altimetry/ranging system (glars) |
publishDate |
1986 |
url |
http://hdl.handle.net/2060/19870005254 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
CASI |
op_relation |
Document ID: 19870005254 Accession ID: 87N14687 http://hdl.handle.net/2060/19870005254 |
op_rights |
No Copyright |
_version_ |
1766031082388455424 |