Fengyun-3D MERSI True Color Imagery Developed for Environmental Applications

论文摘要

Many techniques were developed for creating true color images from satellite solar reflective bands, and the so-derived images have been widely used for environmental monitoring. For the newly launched Fengyun-3 D（FY-3 D）satellite, the same capability is required for its Medium Resolution Spectrum Imager-II（MERSI-II）. In processing the MERSI-II true color image, a more comprehensive processing technique is developed, including the atmospheric correction, nonlinear enhancement, and image splicing. The effect of atmospheric molecular scattering on the total reflectance is corrected by using a parameterized radiative transfer model. A nonlinear stretching of the solar band reflectance is applied for increasing the image contrast. The discontinuity in composing images from multiple orbits and different granules is eliminated through the distance weighted pixel blending（DWPB） method. Through these processing steps, the MERSI-II true color imagery can vividly detect many natural events such as sand and dust storms, snow, algal bloom, fire, and typhoon. Through a comprehensive analysis of the true color imagery, the specific natural disaster events and their magnitudes can be quantified much easily, compared to using the individual channel data.

论文目录

文章来源

类型: 期刊论文

作者: Xiuzhen HAN,Feng WANG,Yang HAN

来源: Journal of Meteorological Research 2019年05期

年度: 2019

分类: 基础科学

专业: 气象学

单位: National Satellite Meteorological Center,China Meteorological Administration,Nanjing University of Information Science & Technology

基金: Supported by the National Key Research and Development Program of China(2018YFC1506500)

分类号: P407

页码: 914-924

总页数: 11

文件大小: 1025K

下载量: 13

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