Sea Ice Detection from RADARSAT-2 Quad-Polarization SAR Imagery Based on Co- and Cross-Polarization Ratio

被引：3
作者：
Zhao, Li [1 ]
Xie, Tao [2 ,3 ]
Perrie, William [4 ]
Yang, Jingsong [5 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Peoples R China
[2] Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266237, Peoples R China
[3] Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing 210044, Peoples R China
[4] Bedford Inst Oceanog, Dept Fisheries & Oceans Canada, Dartmouth, NS B2Y 4A2, Canada
[5] Minist Nat Resources, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Peoples R China
来源：
REMOTE SENSING | 2024年 / 16卷 / 03期
基金：
国家重点研发计划;
关键词：
sea ice detection; RADARSAT-2; synthetic aperture radar (SAR); polarization ratio; SYNTHETIC-APERTURE RADAR; PASSIVE MICROWAVE; CLASSIFICATION; SENTINEL-1; MODEL; DISCRIMINATION; PREDICTION; PARAMETERS; RETRIEVAL; COVER;
D O I：
10.3390/rs16030515
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Arctic sea ice detection is very important in global climate research, Arctic ecosystem protection, ship navigation and human activities. In this paper, by combining the co-pol ratio (HH/VV) and two kinds of cross-pol ratio (HV/VV, HV/HH), a novel sea ice detection method is proposed based on RADARSAT-2 quad-polarization synthetic aperture radar (SAR) images. Experimental results suggest that the co-pol ratio shows promising capability in sea ice detection at a wide range of incidence angles (25-50 degrees), while the two kinds of cross-pol ratio are more applicable to sea ice detection at small incidence angles (20-35 degrees). When incidence angles exceed 35 degrees, wind conditions have a great effect on the performance of the cross-pol ratio. Our method is validated by comparison with the visual interpretation results. The overall accuracy is 96%, far higher than that of single polarization ratio (PR) parameter-based methods. Our method is suitable for sea ice detection in complex sea ice and wind conditions.
引用
收藏
页数：25
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