论文部分内容阅读
应海岸带监测需求,高光谱成像仪开始在海岸带监测中发挥重要作用。搭载于国际空间站上的HICO(Hyperspectral Imager for the Coastal Ocean)是第一颗针对近岸海洋遥感的高光谱成像仪,其波谱范围为360～1 080nm,光谱分辨率为5nm。介绍了HICO数据的基本情况,并与在轨星载高光谱成像仪EO-1Hyperion和HJ-1A HSI基本参数做了对比。同时针对高浑浊水体,以黄河三角洲近岸3种典型地物为例,结合FLAASH大气校正模型,提取了辐亮度和地表反射率,初步对比分析了HICO和HSI的光谱性能。结果表明HICO能更好地反映近岸地物的光谱特征。
In response to the needs of coastal zone monitoring, hyperspectral imagers have begun to play an important role in coastal zone monitoring. HICO (Hyperspectral Imager for the Coastal Ocean) mounted on the ISS is the first hyperspectral imager for coastal ocean remote sensing with a spectral range of 360-180 nm and a spectral resolution of 5 nm. The basic situation of HICO data is introduced and compared with the basic parameters of EO-1Hyperion and HJ-1A HSI in-orbit on-board hyperspectral imager. At the same time, for high turbidity water body, taking the three kinds of typical objects near the coast of the Yellow River Delta as an example, combining the FLAASH atmospheric correction model, the radiance and surface reflectance were extracted, and the spectral properties of HICO and HSI were compared. The results show that HICO can better reflect the spectral features of the coastal features.