摘要
辐射定标是遥感定量化应用的基础。在阐述辐射定标概念,意义和方法的基础上,介绍了发射前定标、在轨星上定标和在轨替代定标的各种方法,并分析了这些方法在卫星不同阶段所起的作用。以在轨替代定标中的场地定标法、场景定标法和交叉定标法为重点,详细介绍了其中各种方法的基本原理,适用范围以及当前国内外研究现状。最后,对当前国际上辐射定标的发展趋势作出展望,并针对国内的辐射定标现状提出相关的建议,使用户能够得到更高精度的遥感数据。
Radiometric calibration is the basis for quantitative application of remote sensing.First the concept,significance and method of radiometric calibration are explained.Then the calibration methods of pre-launch calibration,on-board calibration and vicarious calibration are introduced,and the role of these calibration methods at different stages are analyzed.Taking the focus on the field calibration,scene calibration and cross calibration of vicarious calibration method,the basic principles,scope and current research status of these calibration methods are expatiated.Finally,the prospects of international radiometric calibration are summarized and the proposals for domestic radiometric calibration are put forward,which will enable the users to obtain the more accurate remote sensing data.
出处
《遥感信息》
CSCD
2010年第4期117-128,共12页
Remote Sensing Information
基金
863计划资助项目(2006AA12Z113)
国防科技工业民用专项科研技术研究项目(O7K00100KJ)
关键词
辐射定标
替代定标
场地定标
场景定标
交叉定标
radiance calibration
vicarious calibration
test site calibration
sense calibration
cross calibration
