DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION
The ASTER Global DEM (GDEM) version 1, is a global digital elevation model with one arc-second grid, generated using the ASTER stereo image archive 2000 to August 2008, and was released on June 29, 2009. The GDEM-1 had some bad elevation data. The most simple and effective way to reduce bad elevatio...
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ftdoajarticles:oai:doaj.org/article:6a9832611a68432788baed006cad928a 2023-05-15T13:46:06+02:00 DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION M. Urai T. Tachikawa H. Fujisada 2012-07-01T00:00:00Z https://doi.org/10.5194/isprsannals-I-4-199-2012 https://doaj.org/article/6a9832611a68432788baed006cad928a EN eng Copernicus Publications http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/I-4/199/2012/isprsannals-I-4-199-2012.pdf https://doaj.org/toc/2194-9042 https://doaj.org/toc/2194-9050 2194-9042 2194-9050 doi:10.5194/isprsannals-I-4-199-2012 https://doaj.org/article/6a9832611a68432788baed006cad928a ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol I-4, Pp 199-202 (2012) Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 article 2012 ftdoajarticles https://doi.org/10.5194/isprsannals-I-4-199-2012 2022-12-31T14:31:48Z The ASTER Global DEM (GDEM) version 1, is a global digital elevation model with one arc-second grid, generated using the ASTER stereo image archive 2000 to August 2008, and was released on June 29, 2009. The GDEM-1 had some bad elevation data. The most simple and effective way to reduce bad elevation data in the GDEM-1 is to add new ASTER observation data and re-generate the GDEM. An ASTER Data Acquisition Request was defined, based on the number of good pixels and the number of observations at each observation area, for the GDEM version 2 that was released on October 17, 2011. Using more input data and an improved algorithm, GDEM version 2 reduced the amount of the bad pixel by 4.5% to 7.5% and increased the amount of good tiles by 10.7% to 54.3% over the GDEM-1, except for Antarctica. Another ASTER data set is being collected for GDEM version 3, scheduled for 2013. The ASTER data collection scheme, however, has some constraints. This study sought for techniques to optimize the GDEM data collection balancing the overall ASTER operations and reduction of bad pixels in the GDEM data. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences I-4 199 202 |
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Open Polar |
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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 M. Urai T. Tachikawa H. Fujisada DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION |
topic_facet |
Technology T Engineering (General). Civil engineering (General) TA1-2040 Applied optics. Photonics TA1501-1820 |
description |
The ASTER Global DEM (GDEM) version 1, is a global digital elevation model with one arc-second grid, generated using the ASTER stereo image archive 2000 to August 2008, and was released on June 29, 2009. The GDEM-1 had some bad elevation data. The most simple and effective way to reduce bad elevation data in the GDEM-1 is to add new ASTER observation data and re-generate the GDEM. An ASTER Data Acquisition Request was defined, based on the number of good pixels and the number of observations at each observation area, for the GDEM version 2 that was released on October 17, 2011. Using more input data and an improved algorithm, GDEM version 2 reduced the amount of the bad pixel by 4.5% to 7.5% and increased the amount of good tiles by 10.7% to 54.3% over the GDEM-1, except for Antarctica. Another ASTER data set is being collected for GDEM version 3, scheduled for 2013. The ASTER data collection scheme, however, has some constraints. This study sought for techniques to optimize the GDEM data collection balancing the overall ASTER operations and reduction of bad pixels in the GDEM data. |
format |
Article in Journal/Newspaper |
author |
M. Urai T. Tachikawa H. Fujisada |
author_facet |
M. Urai T. Tachikawa H. Fujisada |
author_sort |
M. Urai |
title |
DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION |
title_short |
DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION |
title_full |
DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION |
title_fullStr |
DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION |
title_full_unstemmed |
DATA ACQUISITION STRATEGIES FOR ASTER GLOBAL DEM GENERATION |
title_sort |
data acquisition strategies for aster global dem generation |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/isprsannals-I-4-199-2012 https://doaj.org/article/6a9832611a68432788baed006cad928a |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol I-4, Pp 199-202 (2012) |
op_relation |
http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/I-4/199/2012/isprsannals-I-4-199-2012.pdf https://doaj.org/toc/2194-9042 https://doaj.org/toc/2194-9050 2194-9042 2194-9050 doi:10.5194/isprsannals-I-4-199-2012 https://doaj.org/article/6a9832611a68432788baed006cad928a |
op_doi |
https://doi.org/10.5194/isprsannals-I-4-199-2012 |
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ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
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I-4 |
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199 |
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