摘要
结合高分辨率静止轨道遥感卫星的特点,通过对已有研究方法的适当改进,给出了基于大气辐射传输机理的高分辨率静止轨道遥感卫星可见光及近红外波段的点扩散函数(Point-spread Function,PSF)模型,并进行邻近效应分析预研究。文中对邻近像元到目标像元距离、邻近像元范围(区域)、观测天顶角、气溶胶光学厚度及其散射相函数的非对称因子等因素对邻近效应的影响进行了系统地实验,并对各因素的影响机制进行了一定分析。结果显示,邻近像元对目标像元入瞳处辐亮度的贡献最高可达2.3%左右。故在对该类型遥感卫星进行大气影响分析、成像模拟、大气校正时考虑邻近效应是必要的。
High-resolution geostationary remote sensing satellite is a new concept satellite, which combines advantages of high-resolution satellite and geostationary ones. Though at present there is no such a satellite of on-orbit operation,it is very po- tential on applications. In the paper, with consideration of features of this kind of satellite,we did necessary improvements over former research methods and developed the point-spread function （PSF） model of visual 8~ near infra-red bands of high-resolu- tion geostationary remote sensing satellite. Then with the model we analyzed the adjacency effect of this kind of satellite. Results were drawn that the radiance contribution of environmental pixels could be up to about 2.3 % and could not be ignored for total sensor radiance. So it is necessary for this kind of satellite to do analysis of atmospheric influence,imaging simulation and atmos- pheric correction with the consideration of adjacency effect.
出处
《遥感信息》
CSCD
2013年第3期14-19,25,共7页
Remote Sensing Information
基金
国家自然科学基金项目(41105017)
国家重点基础研究发展规划项目"973"(2010CB950800)
中科院战略先导项目课题(Y1Y02200XD)
十二五民用航天预研项目(Y1K0030044)
关键词
高分辨率静止轨道遥感卫星
可见光及近红外波段
邻近效应
PSF
high-resolution geostationary remote sensing satellite ~ visual ~ near infra-red bands ~ adjacency effect ~ PSF
