Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea
The “GF-4” satellite is China’s first high resolution geostationary optical remote sensing satellite. It has the unique advantages of short imaging time interval (20s) and high resolution (50m). In order to analyze the effect of GF-4 satellite image registration accuracy on sea ice drift in Bohai Se...
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ftdoajarticles:oai:doaj.org/article:4734b0fe76a44ce782ff54a63c5db8b3 2023-05-15T18:17:53+02:00 Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea Wang Ruifu Wei Pan Zhao Yingjie 2019-01-01T00:00:00Z https://doi.org/10.1051/e3sconf/201913101073 https://doaj.org/article/4734b0fe76a44ce782ff54a63c5db8b3 EN FR eng fre EDP Sciences https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/57/e3sconf_chinabiofilms18_01073.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/201913101073 https://doaj.org/article/4734b0fe76a44ce782ff54a63c5db8b3 E3S Web of Conferences, Vol 131, p 01073 (2019) Environmental sciences GE1-350 article 2019 ftdoajarticles https://doi.org/10.1051/e3sconf/201913101073 2022-12-31T10:42:50Z The “GF-4” satellite is China’s first high resolution geostationary optical remote sensing satellite. It has the unique advantages of short imaging time interval (20s) and high resolution (50m). In order to analyze the effect of GF-4 satellite image registration accuracy on sea ice drift in Bohai Sea, firstly, the orthorectification of the 28 image data available from August 2016 to March 2018 in the Bohai Sea area was carried out. Then we selected the sea-land edge points as control points, and registration of two images which have the same time interval. Next, we recorded the marked same name points which searched from the bottom of Liaodong bay, east of Liaodong bay and west of Liaodong bay respectlly. We statisticed the direction and frequency of land point offset sub-regionally, then we created the rose plots and maked histogram of the offset of land point. The results show that, when the time interval is 4 hours and 24 hours, the dominant migration direction in the three regions in Liaodong bay is east; when the time interval is 1 minute, the dominant migration direction in Liaodong Bay bottom and Liaodong Bay west coast land is south, Followed by east and southeast respectively; the dominant migration in Liaodong Bay East Coast is north, followed by east; When the time interval is 3 hours, the dominant migration direction in west of Liaodong Bay, bottom of Liaodong Bay and east of Liaodong bay are east, west and south respectively, followed by southeast, east, southeast respectively. The land offset in three regions is major centralized distribution in a range which is from 60m to 80m. That is to say, the offset of land is basically equal to 1.2 times of pixels, and the maximum land offset is less than 2 times of pixels. Through statistical analysis, it can be seen that with the increase of time interval, the land offset will not change much. This study also paves the way for the study of the drift of sea ice. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles E3S Web of Conferences 131 01073 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English French |
topic |
Environmental sciences GE1-350 |
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Environmental sciences GE1-350 Wang Ruifu Wei Pan Zhao Yingjie Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea |
topic_facet |
Environmental sciences GE1-350 |
description |
The “GF-4” satellite is China’s first high resolution geostationary optical remote sensing satellite. It has the unique advantages of short imaging time interval (20s) and high resolution (50m). In order to analyze the effect of GF-4 satellite image registration accuracy on sea ice drift in Bohai Sea, firstly, the orthorectification of the 28 image data available from August 2016 to March 2018 in the Bohai Sea area was carried out. Then we selected the sea-land edge points as control points, and registration of two images which have the same time interval. Next, we recorded the marked same name points which searched from the bottom of Liaodong bay, east of Liaodong bay and west of Liaodong bay respectlly. We statisticed the direction and frequency of land point offset sub-regionally, then we created the rose plots and maked histogram of the offset of land point. The results show that, when the time interval is 4 hours and 24 hours, the dominant migration direction in the three regions in Liaodong bay is east; when the time interval is 1 minute, the dominant migration direction in Liaodong Bay bottom and Liaodong Bay west coast land is south, Followed by east and southeast respectively; the dominant migration in Liaodong Bay East Coast is north, followed by east; When the time interval is 3 hours, the dominant migration direction in west of Liaodong Bay, bottom of Liaodong Bay and east of Liaodong bay are east, west and south respectively, followed by southeast, east, southeast respectively. The land offset in three regions is major centralized distribution in a range which is from 60m to 80m. That is to say, the offset of land is basically equal to 1.2 times of pixels, and the maximum land offset is less than 2 times of pixels. Through statistical analysis, it can be seen that with the increase of time interval, the land offset will not change much. This study also paves the way for the study of the drift of sea ice. |
format |
Article in Journal/Newspaper |
author |
Wang Ruifu Wei Pan Zhao Yingjie |
author_facet |
Wang Ruifu Wei Pan Zhao Yingjie |
author_sort |
Wang Ruifu |
title |
Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea |
title_short |
Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea |
title_full |
Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea |
title_fullStr |
Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea |
title_full_unstemmed |
Analysis of Influence Factors of GF-4 Registration Accuracy on Sea Ice Drift in the Bohai Sea |
title_sort |
analysis of influence factors of gf-4 registration accuracy on sea ice drift in the bohai sea |
publisher |
EDP Sciences |
publishDate |
2019 |
url |
https://doi.org/10.1051/e3sconf/201913101073 https://doaj.org/article/4734b0fe76a44ce782ff54a63c5db8b3 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
E3S Web of Conferences, Vol 131, p 01073 (2019) |
op_relation |
https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/57/e3sconf_chinabiofilms18_01073.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/201913101073 https://doaj.org/article/4734b0fe76a44ce782ff54a63c5db8b3 |
op_doi |
https://doi.org/10.1051/e3sconf/201913101073 |
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E3S Web of Conferences |
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131 |
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01073 |
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