气候变化领域集成服务门户(CCPortal): Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band

CCPortal

DOI	10.5194/tcd-9-4539-2015
	Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band
	Fors A.S.; Brekke C.; Doulgeris A.P.; Eltoft T.; Renner A.H.H.; Gerland S.
发表日期	2015
ISSN	19940432
卷号	9 期号:5
英文摘要	In this study we investigate the potential of sea ice segmentation by C- and X-band multi-polarisation synthetic aperture radar (SAR) features during late summer. Five high-resolution satellite SAR scenes were recorded in the Fram Strait covering iceberg-fast first-year and old sea ice during a week with air temperatures varying around zero degrees Celsius. In situ data consisting of sea ice thickness, surface roughness and aerial photographs were collected during a helicopter flight at the site. Six polarimetric SAR features were extracted for each of the scenes. The ability of the individual SAR features to discriminate between sea ice types and their temporally consistency were examined. All SAR features were found to add value to sea ice type discrimination. Relative kurtosis, geometric brightness, cross-polarisation ratio and co-polarisation correlation angle were found to be temporally consistent in the investigated period, while co-polarisation ratio and co-polarisation correlation magnitude were found to be temporally inconsistent. An automatic feature-based segmentation algorithm was tested both for a full SAR feature set, and for a reduced SAR feature set limited to temporally consistent features. In general, the algorithm produces a good late summer sea ice segmentation. Excluding temporally inconsistent SAR features improved the segmentation at air temperatures above zero degrees Celcius. © Author(s) 2015.
学科领域	aerial photograph; air temperature; algorithm; sea ice; segmentation; synthetic aperture radar; Arctic; Fram Strait
语种	英语
scopus关键词	aerial photograph; air temperature; algorithm; sea ice; segmentation; synthetic aperture radar; Arctic; Fram Strait
来源期刊	Cryosphere Discussions
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119823
作者单位	Department of Physics and Technology, University of Tromsø - The Arctic University of Norway, Tromsø, 9037, Norway; Institute of Marine Research, Tromsø, 9294, Norway; Norwegian Polar Institute, FRAM Centre, Tromsø, 9296, Norway
推荐引用方式 GB/T 7714	Fors A.S.,Brekke C.,Doulgeris A.P.,et al. Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band[J],2015,9(5).
APA	Fors A.S.,Brekke C.,Doulgeris A.P.,Eltoft T.,Renner A.H.H.,&Gerland S..(2015).Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band.Cryosphere Discussions,9(5).
MLA	Fors A.S.,et al."Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band".Cryosphere Discussions 9.5(2015).