气候变化领域集成服务门户(CCPortal): Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images

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DOI	10.5194/tc-10-1529-2016
	Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images
	Zhang X.; Dierking W.; Zhang J.; Meng J.; Lang H.
发表日期	2016
ISSN	19940416
卷号	10 期号:4
英文摘要	In this paper we introduce a parameter for the retrieval of the thickness of undeformed first-year sea ice that is specifically adapted to compact polarimetric (CP) synthetic aperture radar (SAR) images. The parameter is denoted as the "CP ratio". In model simulations we investigated the sensitivity of the CP ratio to the dielectric constant, ice thickness, ice surface roughness, and radar incidence angle. From the results of the simulations we deduced optimal sea ice conditions and radar incidence angles for the ice thickness retrieval. C-band SAR data acquired over the Labrador Sea in circular transmit and linear receive (CTLR) mode were generated from RADARSAT-2 quad-polarization images. In comparison with results from helicopter-borne measurements, we tested different empirical equations for the retrieval of ice thickness. An exponential fit between the CP ratio and ice thickness provides the most reliable results. Based on a validation using other compact polarimetric SAR images from the same region, we found a root mean square (rms) error of 8 cm and a maximum correlation coefficient of 0.94 for the retrieval procedure when applying it to level ice between 0.1 and 0.8 m thick.
学科领域	dielectric property; ice thickness; RADARSAT; satellite imagery; sea ice; simulation; synthetic aperture radar; Atlantic Ocean; Labrador Sea
语种	英语
scopus关键词	dielectric property; ice thickness; RADARSAT; satellite imagery; sea ice; simulation; synthetic aperture radar; Atlantic Ocean; Labrador Sea
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119615
作者单位	First Institute of Oceanography, State Oceanic Administration, Qingdao, China; Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany; Beijing University of Chemical Technology, Beijing, China, China
推荐引用方式 GB/T 7714	Zhang X.,Dierking W.,Zhang J.,et al. Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images[J],2016,10(4).
APA	Zhang X.,Dierking W.,Zhang J.,Meng J.,&Lang H..(2016).Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images.Cryosphere,10(4).
MLA	Zhang X.,et al."Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images".Cryosphere 10.4(2016).