大气散射对采用归一化植被指数进行赤潮遥感监测的影响研究
Research of the effects of atmospheric scattering on red tide remote sensing with normalized vegetation index
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摘要: 近年来赤潮灾害在我国海域频繁发生,对沿海环境、经济和人民生产生活都造成一定的影响,因此对赤潮进行实时监测并业务化运行就显得尤其重要.赤潮遥感监测是目前常用手段之一,在实践中取得了一定的效果,但到目前为止还没有一种成熟的算法能用于业务化监测赤潮的发生.很多研究人员借鉴归一化植被指数(NDVI)阈值法、海表温度(SST)异常等来判断赤潮的发生,但归一化植被指数阈值法经常会出现误判或无法区分正常与异常水体的情况.该阈值范围由先验知识得到,没有定量的理论依据.
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关键词:
- 赤潮遥感监测 /
- 归一化植被指数 /
- 大气辐射计算 /
- NOAA16/AVHRR
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