摘要
沙漠场景法是一种基于时间序列的相对辐射定标方法,通常用于气象卫星等低空间分辨率卫星。沙漠场景法选择均匀稳定的大面积沙漠地区作为研究区,通过长时间序列图图像的统计分析,假设实验场地的地表和大气稳定,监测传感器的长期变化趋势。分析沙漠场景法的基本原理及场地选择标准,介绍国内外利用沙漠场景进行辐射定标的研究现状,指出各种方法的优缺点,为今后开展国产卫星沙漠场景的时间序列定标提供参考。
As a time series-based relative calibration method,desert scene radiometric calibration method can be used to calibrate the low spatial resolution satellites,such as meteorological satellite.In the desert scene radiometric calibration method,the selected desert site has the characters of large area with good homogeneous,based on the statistical analysis of long time series images,the surface and atmosphere of the site are assumed to be constant so as to effectively detect the long-term trends of the sensor.The paper analyzes the principles of the desert scene calibration method and the criteria of site election,introduces the research progress of desert scene-based calibration method both home and abroad and finally points out the pros and cons of the desert scenes radiometric calibration method.The study offers references to the time series of the desert scene calibration for domestic satellites.
出处
《安徽农业科学》
CAS
北大核心
2011年第20期12581-12583,12632,共4页
Journal of Anhui Agricultural Sciences
基金
科技部国际科技合作计划项目(2010DFA21880)
国家自然科学基金项目(40971227)
国际科技中澳合作项目(2008DFA21540)
关键词
沙漠场景
辐射定标
时间序列定标
Desert scenes
Radiometric calibration
Time series calibration
