Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points
Abstract NASA’s new Earth-Observing satellite namely ICESat-2 estimates the elevation of ice sheets, glaciers, sea ice, land surface, and canopy with the help of photon counting ATLAS sensor on-board. Higher-level data products like ATL08 uses an iterative filtering approach of the signal photons fo...
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Walter de Gruyter GmbH
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crdegruyter:10.1515/jag-2020-0003 2024-10-13T14:10:44+00:00 Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points Dandabathula, Giribabu Verma, Manish Rao Sitiraju, Srinivasa 2020 http://dx.doi.org/10.1515/jag-2020-0003 https://www.degruyter.com/view/journals/jag/14/3/article-p285.xml https://www.degruyter.com/document/doi/10.1515/jag-2020-0003/xml https://www.degruyter.com/document/doi/10.1515/jag-2020-0003/pdf en eng Walter de Gruyter GmbH Journal of Applied Geodesy volume 14, issue 3, page 285-293 ISSN 1862-9024 1862-9016 journal-article 2020 crdegruyter https://doi.org/10.1515/jag-2020-0003 2024-09-17T04:10:10Z Abstract NASA’s new Earth-Observing satellite namely ICESat-2 estimates the elevation of ice sheets, glaciers, sea ice, land surface, and canopy with the help of photon counting ATLAS sensor on-board. Higher-level data products like ATL08 uses an iterative filtering approach of the signal photons for capturing canopy height and terrain height. This article provides results from the evaluation of best-fit elevation on land from ICESat-2 ATL08 data product with DGPS surveyed points. 40 points were surveyed for elevation in the arid region with different topographies of varied surface cover. Mean bias error computed from the best-fit elevation from ICESat-2 ATL08 data product and corresponding DGPS surveyed points is near close to zero for the segments created from strong beams. The conformity between these two sets of elevation values is better than 12 cm (RMSE) if we use the segments from strong beam for the topographic variations ranging from flat to almost flat type. Article in Journal/Newspaper Sea ice De Gruyter Journal of Applied Geodesy 14 3 285 293 |
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Open Polar |
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De Gruyter |
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crdegruyter |
language |
English |
description |
Abstract NASA’s new Earth-Observing satellite namely ICESat-2 estimates the elevation of ice sheets, glaciers, sea ice, land surface, and canopy with the help of photon counting ATLAS sensor on-board. Higher-level data products like ATL08 uses an iterative filtering approach of the signal photons for capturing canopy height and terrain height. This article provides results from the evaluation of best-fit elevation on land from ICESat-2 ATL08 data product with DGPS surveyed points. 40 points were surveyed for elevation in the arid region with different topographies of varied surface cover. Mean bias error computed from the best-fit elevation from ICESat-2 ATL08 data product and corresponding DGPS surveyed points is near close to zero for the segments created from strong beams. The conformity between these two sets of elevation values is better than 12 cm (RMSE) if we use the segments from strong beam for the topographic variations ranging from flat to almost flat type. |
format |
Article in Journal/Newspaper |
author |
Dandabathula, Giribabu Verma, Manish Rao Sitiraju, Srinivasa |
spellingShingle |
Dandabathula, Giribabu Verma, Manish Rao Sitiraju, Srinivasa Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points |
author_facet |
Dandabathula, Giribabu Verma, Manish Rao Sitiraju, Srinivasa |
author_sort |
Dandabathula, Giribabu |
title |
Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points |
title_short |
Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points |
title_full |
Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points |
title_fullStr |
Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points |
title_full_unstemmed |
Evaluation of best-fit terrain elevation of ICESat-2 ATL08 using DGPS surveyed points |
title_sort |
evaluation of best-fit terrain elevation of icesat-2 atl08 using dgps surveyed points |
publisher |
Walter de Gruyter GmbH |
publishDate |
2020 |
url |
http://dx.doi.org/10.1515/jag-2020-0003 https://www.degruyter.com/view/journals/jag/14/3/article-p285.xml https://www.degruyter.com/document/doi/10.1515/jag-2020-0003/xml https://www.degruyter.com/document/doi/10.1515/jag-2020-0003/pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Journal of Applied Geodesy volume 14, issue 3, page 285-293 ISSN 1862-9024 1862-9016 |
op_doi |
https://doi.org/10.1515/jag-2020-0003 |
container_title |
Journal of Applied Geodesy |
container_volume |
14 |
container_issue |
3 |
container_start_page |
285 |
op_container_end_page |
293 |
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1812818193188651008 |