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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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光学浅水海草高光谱识别
Keywords: 海草,高光谱,光学浅水,导数光谱,覆盖率
Abstract:
？以三亚湾泰莱藻为例,对海草光谱特征进行分析。结果表明,450—780nm是海草光谱主要敏感波段,其波段内的导数光谱是海草叶面积大小序列辨别的有效依据。一阶导数获得的红边与叶片叶绿素a浓度密切相关。？？海草在625nm、675nm两处出现明显的导数特征峰,两峰峰值相差较大;其优势特征峰分布在550nm、700nm、750—780nm。实际应用中,此特征可作为海草底质分类的识别条件,与海草覆盖率和光谱特征的关系相结合,可对大量的遥感数据进行识别,从而达到大尺度遥感监测海草分布和动态变化的目的。
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