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Extraction of Coastal Water Information Based on Airborne Hyperspectral Data
Author(s): 
Pages: 71-76
Year: Issue:  2
Journal: Ocean Technology

Keyword:  航空高光谱遥感反射率水体提取阈值分割东海岛;
Abstract: 近岸水体与人类生产、生活密切相关,航空高光谱遥感以其高分辨率、灵活等优点在环境监测中颇具潜力,尤其是在近岸水色、海岸带环境的实时监测中更具优势.基于与中国海监南海航空支队合作开展的航空高光谱遥感飞行实验资料,以湛江东海岛陆海区域为例,开展该海域水体遥感信息提取及分类研究.以不同地物遥感反射率信息为特征,通过光谱信息直方图进行了该海域水体信息提取方法探索.研究结果表明,湛江港及近海水体与陆地在近红外区域有较大区分度,直方图统计获得的最佳分离阈值可以很好地提取水体信息,但在水陆交界区域提取精度较低.在近红909.7 nm处,遥感反射率分割阈值为10.27%,水体提取精度为84%,kappa系数为0.686 2.
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