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中文摘要：
针对传统的监测海冰方法受限于时间和空间,大范围的空间监测、长时间的动态监测不能满足要求这一问题,为监测南极磷虾探捕区海冰分布和独立浮冰运动特征,利用风云三号气象卫星中分辨率成像光谱仪（FY-3/MERSI）数据实现了研究区的独立浮冰信息提取。首先对FY-3/MERSI多波段数据进行辐射定标、投影、裁剪等预处理,结合多通道阈值法和比值法对海冰、云、海水进行识别,得到研究区海冰分布图;然后采用分区域双峰阈值法与梯度差分相结合的方法提取研究区的独立海冰,得到独立海冰分布图;最后对大块的独立海冰进行运动状态分析。结果表明,FY-3/MERSI数据可以有效地获取研究区海冰分布以及独立海冰分布信息,对于形状变化较小的独立海冰,可以分析海冰的运动状态。
英文摘要：
For the monitoring of sea ice distribution and independent ice movement characteristics in the Antarctic krill fishing area,the article uses meteorological satellite FY-III medium resolution spectral imager data（FY-3/MERSI）to achieve the study area independent ice information extraction.Firstly,the FY3/MERSI multi-band data are preprocessed by radiometric calibration,projection,image clipping and so on,combined with multi-channel threshold and ratio method to classify sea ice,clouds,and sea water to obtain sea ice distribution map of the study area.Then,use the method of sub regional bimodal threshold and gradient differential to extract independent ice in the study area to obtain independent ice distribution map.Finally,analyze the motion state of large independent sea ice.The results showed that FY-3/MERSI data can effectively get sea ice distribution and independent ice distribution information in the study area;for the independent ice with smaller change in shape,its motion state can be analyzed.
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