DOI: 10.5194/tc-10-401-2016
Scopus记录号: 2-s2.0-84958971396
论文题名: Late-summer sea ice segmentation with multi-polarisation SAR features in C and X band
作者: Fors A ; S ; , Brekke C ; , Doulgeris A ; P ; , Eltoft T ; , Renner A ; H ; H ; , Gerland S
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 1 起始页码: 401
结束页码: 415
语种: 英语
英文关键词: air temperature
; algorithm
; ice thickness
; iceberg
; polarization
; sea ice
; segmentation
; surface roughness
; synthetic aperture radar
; Arctic
; Fram Strait
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 0 °C. 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 temporal 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 C band, the algorithm produced a good late-summer sea ice segmentation, separating the scenes into segments that could be associated with different sea ice types in the next step. The X-band performance was slightly poorer. Excluding temporally inconsistent SAR features improved the segmentation in one of the X-band scenes. © 2016 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75185
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Physics and Technology, University of Tromsø, Arctic University of Norway, Tromsø, Norway; Institute of Marine Research, Tromsø, Norway; Norwegian Polar Institute, FRAM Centre, Tromsø, Norway
Recommended Citation:
Fors A,S,, Brekke C,et al. Late-summer sea ice segmentation with multi-polarisation SAR features in C and X band[J]. Cryosphere,2016-01-01,10(1)