环境一号卫星高光谱遥感数据的内陆水质监测适宜性——以巢湖为例  

Suitability assessment of lake water quality monitoring on waterbody images acquired by HJ-1A hyperspectral imager:a case study of Lake Chaohu

作　　者：王彦飞[1] 李云梅[1] 吕恒[1] 吴传庆[2] 金鑫[1] 尹斌[1] 张红[1] 

机构地区：[1]南京师范大学虚拟地理环境教育部重点实验室,南京210046 [2]环境保护部环境卫星应用中心,北京100029

出　　处：《湖泊科学》2011年第5期789-795,共7页Journal of Lake Sciences

基　　金：国家自然科学基金项目(40971215);博士点基金(20093207110011);南京师范大学优秀博士论文培养计划(12432116011036)联合资助

摘　　要：环境一号星座的A星(HJ-1A)上搭载了超光谱成像仪(HSI),它是具有高光谱分辨率的全新国产遥感数据源,为水质遥感特别是内陆水质遥感提供了新的高光谱数据.但HSI影像的处理方法尚不完善,在广泛应用于水质遥感前对其进行质量研究和评价非常必要.本文针对HSI数据在巢湖水质监测应用方面的适宜性,对信噪比和数据真实性、倾斜条纹去除方法、大气校正方法等方面分别进行了评价.结果表明,HSI水体图像在530-900 nm波段范围内数据质量较为真实可靠;6S与FLAASH方法均能有效去除大气效应,在530-830 nm范围内效果较好.The hyperspectral imager（HSI） is loaded on the HJ-1A satellite, which is a new source of home-made data with high spectral resolution and provides new remote sensing data for water qualily, especially for lake water quality monitoring. Because the processing method of HSI images is underdeveloped, the quality evaluation and research for HSI images are necessary before it is extensively used in water-quality remote sensing. Suitability of lake water quality monitoring in Lake Chaohu by HSI image is as- sessed via data verifying, signal-to-noise computing, stripes removing and atmospheric correcting. The results show that HSI data of waterbody is reliable between wave bands 530 - 900 nm. Both 6S and FLAASH algorithm works well in atmospheric correction of HS1 data, and the best range is at the 530 -830 nm.

关 键 词：环境一号 高光谱 大气校正 适宜性评价 条带去除 巢湖 

分 类 号：X832[环境科学与工程—环境工程] P237[天文地球—摄影测量与遥感]