FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS
During the last two decades surface elevation data have been gathered over the Greenland Ice Sheet (GrIS) from a variety of different sensors including spaceborne and airborne laser altimetry, such as NASA’s Ice Cloud and land Elevation Satellite (ICESat), Airborne Topographic Mapper (ATM) and Laser...
Published in: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2016
|
Subjects: | |
Online Access: | https://doi.org/10.5194/isprs-archives-XLI-B8-531-2016 https://doaj.org/article/4c273565284a4e70a0d8f8b753060b3c |
id |
ftdoajarticles:oai:doaj.org/article:4c273565284a4e70a0d8f8b753060b3c |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:4c273565284a4e70a0d8f8b753060b3c 2023-05-15T13:07:35+02:00 FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS T. Schenk B. M. Csatho K. Duncan 2016-06-01T00:00:00Z https://doi.org/10.5194/isprs-archives-XLI-B8-531-2016 https://doaj.org/article/4c273565284a4e70a0d8f8b753060b3c EN eng Copernicus Publications https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B8/531/2016/isprs-archives-XLI-B8-531-2016.pdf https://doaj.org/toc/1682-1750 https://doaj.org/toc/2194-9034 doi:10.5194/isprs-archives-XLI-B8-531-2016 1682-1750 2194-9034 https://doaj.org/article/4c273565284a4e70a0d8f8b753060b3c The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLI-B8, Pp 531-536 (2016) Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 article 2016 ftdoajarticles https://doi.org/10.5194/isprs-archives-XLI-B8-531-2016 2022-12-31T01:40:21Z During the last two decades surface elevation data have been gathered over the Greenland Ice Sheet (GrIS) from a variety of different sensors including spaceborne and airborne laser altimetry, such as NASA’s Ice Cloud and land Elevation Satellite (ICESat), Airborne Topographic Mapper (ATM) and Laser Vegetation Imaging Sensor (LVIS), as well as from stereo satellite imaging systems, most notably from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Worldview. The spatio-temporal resolution, the accuracy, and the spatial coverage of all these data differ widely. For example, laser altimetry systems are much more accurate than DEMs derived by correlation from imaging systems. On the other hand, DEMs usually have a superior spatial resolution and extended spatial coverage. We present in this paper an overview of the SERAC (Surface Elevation Reconstruction And Change detection) system, designed to cope with the data complexity and the computation of elevation change histories. SERAC simultaneously determines the ice sheet surface shape and the time-series of elevation changes for surface patches whose size depends on the ruggedness of the surface and the point distribution of the sensors involved. By incorporating different sensors, SERAC is a true fusion system that generates the best plausible result (time series of elevation changes) a result that is better than the sum of its individual parts. We follow this up with an example of the Helmheim gacier, involving ICESat, ATM and LVIS laser altimetry data, together with ASTER DEMs. Article in Journal/Newspaper Airborne Topographic Mapper Greenland Ice Sheet Directory of Open Access Journals: DOAJ Articles Greenland The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B8 531 536 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 |
spellingShingle |
Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 T. Schenk B. M. Csatho K. Duncan FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS |
topic_facet |
Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 |
description |
During the last two decades surface elevation data have been gathered over the Greenland Ice Sheet (GrIS) from a variety of different sensors including spaceborne and airborne laser altimetry, such as NASA’s Ice Cloud and land Elevation Satellite (ICESat), Airborne Topographic Mapper (ATM) and Laser Vegetation Imaging Sensor (LVIS), as well as from stereo satellite imaging systems, most notably from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Worldview. The spatio-temporal resolution, the accuracy, and the spatial coverage of all these data differ widely. For example, laser altimetry systems are much more accurate than DEMs derived by correlation from imaging systems. On the other hand, DEMs usually have a superior spatial resolution and extended spatial coverage. We present in this paper an overview of the SERAC (Surface Elevation Reconstruction And Change detection) system, designed to cope with the data complexity and the computation of elevation change histories. SERAC simultaneously determines the ice sheet surface shape and the time-series of elevation changes for surface patches whose size depends on the ruggedness of the surface and the point distribution of the sensors involved. By incorporating different sensors, SERAC is a true fusion system that generates the best plausible result (time series of elevation changes) a result that is better than the sum of its individual parts. We follow this up with an example of the Helmheim gacier, involving ICESat, ATM and LVIS laser altimetry data, together with ASTER DEMs. |
format |
Article in Journal/Newspaper |
author |
T. Schenk B. M. Csatho K. Duncan |
author_facet |
T. Schenk B. M. Csatho K. Duncan |
author_sort |
T. Schenk |
title |
FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS |
title_short |
FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS |
title_full |
FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS |
title_fullStr |
FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS |
title_full_unstemmed |
FUSION OF LASER ALTIMETRY DATA WITH DEMS DERIVED FROM STEREO IMAGING SYSTEMS |
title_sort |
fusion of laser altimetry data with dems derived from stereo imaging systems |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/isprs-archives-XLI-B8-531-2016 https://doaj.org/article/4c273565284a4e70a0d8f8b753060b3c |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Airborne Topographic Mapper Greenland Ice Sheet |
genre_facet |
Airborne Topographic Mapper Greenland Ice Sheet |
op_source |
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLI-B8, Pp 531-536 (2016) |
op_relation |
https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B8/531/2016/isprs-archives-XLI-B8-531-2016.pdf https://doaj.org/toc/1682-1750 https://doaj.org/toc/2194-9034 doi:10.5194/isprs-archives-XLI-B8-531-2016 1682-1750 2194-9034 https://doaj.org/article/4c273565284a4e70a0d8f8b753060b3c |
op_doi |
https://doi.org/10.5194/isprs-archives-XLI-B8-531-2016 |
container_title |
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
container_volume |
XLI-B8 |
container_start_page |
531 |
op_container_end_page |
536 |
_version_ |
1766060266363027456 |