First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2
Coordinating and collecting satellite data of changing polar environments is one of the prime activities of International Polar Year (IPY) 2007–08 (Rapley et al. 2004). Within this framework, the requirements to obtain spaceborne snapshots of the Polar Regions and key high latitude processes have be...
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crcambridgeupr:10.1017/s0954102008001338 2024-03-03T08:38:24+00:00 First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2 Liu, Cheng-Chien Chang, Yueh-Cheng Huang, Stefani Wu, Frank Wu, An-Ming Kato, Soushi Yamaguchi, Yasushi 2008 http://dx.doi.org/10.1017/s0954102008001338 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008001338 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 20, issue 6, page 605-606 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2008 crcambridgeupr https://doi.org/10.1017/s0954102008001338 2024-02-08T08:42:53Z Coordinating and collecting satellite data of changing polar environments is one of the prime activities of International Polar Year (IPY) 2007–08 (Rapley et al. 2004). Within this framework, the requirements to obtain spaceborne snapshots of the Polar Regions and key high latitude processes have been prepared by the international cryospheric community under the auspices of the approved IPY project titled the Global Inter-agency IPY Polar Snapshot Year (GIIPSY). Earlier efforts in manoeuvring Radarsat-1 in a special mode provided radar images with a spatial resolution of 30 m over the entirety of Antarctica during September–October 1997 (Jezek et al. 1998). Limited to their altitude (AL), swath (SW) and pointing capability (PC), however, the operation of optical satellites with high-spatial-resolution sensors is generally restricted to certain latitudes. For example, Landsat (AL:705 km/SW:185 km/PC:0°) mission has been able to provide high-spatial-resolution optical imagery only to ~81°N to ~81°S since the 1980s. The coverage is now extended to ~86° by ASTER (AL:705 km/SW:60 km/PC:24°) (Kargel et al. 2005), but there has been no availability of space-borne optical image of the polar regions with a resolution equivalent or higher than Landsat type sensors with latitudes higher than 86°, until the successful operation of Formosat-2 (AL:891 km/SW:24 km/PC: ± 45° across and along track). Equipped with two-axes high torque reaction wheels, Formosat-2 is able to point not only to ± 45° across track, but also to ± 45° along track (Liu et al. 2007). Figure 1 shows the accessible areas (longer lines: along track ± 0°, across track ± 45°; shorter lines: along track ± 0°, across track ± 30°) and the corresponding ground tracks (solid curves) of Formosat-2 in the Polar Regions. Note that the accessible areas would be even greater if the pointing direction is also set to ± 45° along track. The detailed comparison of Formosat-2 with other similar sensors, including the multi-spectral bands and imaging repeat period, can be ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica International Polar Year IPY Cambridge University Press Antarctic The Antarctic Antarctic Science 20 6 605 606 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Liu, Cheng-Chien Chang, Yueh-Cheng Huang, Stefani Wu, Frank Wu, An-Ming Kato, Soushi Yamaguchi, Yasushi First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2 |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Coordinating and collecting satellite data of changing polar environments is one of the prime activities of International Polar Year (IPY) 2007–08 (Rapley et al. 2004). Within this framework, the requirements to obtain spaceborne snapshots of the Polar Regions and key high latitude processes have been prepared by the international cryospheric community under the auspices of the approved IPY project titled the Global Inter-agency IPY Polar Snapshot Year (GIIPSY). Earlier efforts in manoeuvring Radarsat-1 in a special mode provided radar images with a spatial resolution of 30 m over the entirety of Antarctica during September–October 1997 (Jezek et al. 1998). Limited to their altitude (AL), swath (SW) and pointing capability (PC), however, the operation of optical satellites with high-spatial-resolution sensors is generally restricted to certain latitudes. For example, Landsat (AL:705 km/SW:185 km/PC:0°) mission has been able to provide high-spatial-resolution optical imagery only to ~81°N to ~81°S since the 1980s. The coverage is now extended to ~86° by ASTER (AL:705 km/SW:60 km/PC:24°) (Kargel et al. 2005), but there has been no availability of space-borne optical image of the polar regions with a resolution equivalent or higher than Landsat type sensors with latitudes higher than 86°, until the successful operation of Formosat-2 (AL:891 km/SW:24 km/PC: ± 45° across and along track). Equipped with two-axes high torque reaction wheels, Formosat-2 is able to point not only to ± 45° across track, but also to ± 45° along track (Liu et al. 2007). Figure 1 shows the accessible areas (longer lines: along track ± 0°, across track ± 45°; shorter lines: along track ± 0°, across track ± 30°) and the corresponding ground tracks (solid curves) of Formosat-2 in the Polar Regions. Note that the accessible areas would be even greater if the pointing direction is also set to ± 45° along track. The detailed comparison of Formosat-2 with other similar sensors, including the multi-spectral bands and imaging repeat period, can be ... |
format |
Article in Journal/Newspaper |
author |
Liu, Cheng-Chien Chang, Yueh-Cheng Huang, Stefani Wu, Frank Wu, An-Ming Kato, Soushi Yamaguchi, Yasushi |
author_facet |
Liu, Cheng-Chien Chang, Yueh-Cheng Huang, Stefani Wu, Frank Wu, An-Ming Kato, Soushi Yamaguchi, Yasushi |
author_sort |
Liu, Cheng-Chien |
title |
First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2 |
title_short |
First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2 |
title_full |
First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2 |
title_fullStr |
First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2 |
title_full_unstemmed |
First space-borne high-spatial-resolution optical imagery of the Antarctic from Formosat-2 |
title_sort |
first space-borne high-spatial-resolution optical imagery of the antarctic from formosat-2 |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1017/s0954102008001338 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102008001338 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctic Science Antarctica International Polar Year IPY |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica International Polar Year IPY |
op_source |
Antarctic Science volume 20, issue 6, page 605-606 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102008001338 |
container_title |
Antarctic Science |
container_volume |
20 |
container_issue |
6 |
container_start_page |
605 |
op_container_end_page |
606 |
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1792506784482590720 |