传感器交叉辐射定标综述  

Review of radiometric cross-calibration

作　　者：高彩霞[1] 姜小光[1] 马灵玲[2] 霍红元[1] 

机构地区：[1]中国科学院研究生院,北京100049 [2]中国科学院光电研究院,北京100094

出　　处：《干旱区地理》2013年第1期139-146,共8页Arid Land Geography

基　　金：国家高技术研究发展计划(2012AA121103);国家自然科学基金面上项目(41071231)

摘　　要：当前遥感应用逐渐从定性向定量化发展的趋势对辐射定标的可靠性提出了更高的要求。传统的场地替代定标法虽然定标精度较高,但是其对场地及测量过程有很严格的要求,能够提供的数据非常有限。交叉定标是国际上新近发展起来的一种无场地定标技术,它的应用弥补了场地定标的不足。对光线匹配交叉定标、光谱匹配交叉定标、基于辐射传输模型交叉定标以及基于瑞利散射交叉定标4种交叉定标方法原理进行了详细介绍,并针对每种方法分析了其适用性。With the development of quantitative remote sensing,interest in the radiometric calibration aspects of terrestrial remote sensing has been on the rise,and significant resources are being devoted to the relevant areas of research and development.The radiometric calibration of those sensors is a contributing factor to the success of application of remote sensing data.The calibration of sensors has relied on the preflight laboratory work as well as on in-flight techniques.At present,three kinds of in-flight radiometric calibration methods have been developed and widely used,namely,on-board calibration,in-situ calibration and cross-calibration.On-board calibrators,such as solar diffuser（SD）and solar diffuser stability monitor（SDSM）,can be used for operational calibration;however,some satellites are not equipped with these due to power,weight,and space restrictions.In order to compensate for the limitations of on-board calibration systems,many methods have been proposed and used for in-flight radiometric calibration,such as in-situ calibration and cross-calibration.The problem with in-situ calibration is that it could be labor intensive,costly and time consuming.This typically limits the number of calibrations that can be performed.Cross-calibration is an alternative and potentially easier technique that can be used to acquire post-launch calibration coefficients.In comparison to in-situ calibration,cross-calibration can circumvent the strict requirements of atmospheric and surface variables;it is a cost-effective and convenient mean of calibration without the need of accurate synchronous in-situ measurements,compensating for the deficiencies of in-situ calibration.To date,many cross-calibration methods have been proposed with the same goal but different application conditions,advantages and limitations.Therefore,this paper aims to review these cross-calibration methods and to provide technical assistance for in-flight calibration.This paper gives descriptions of four cross-calibration methods,namely,ray-match

关 键 词：交叉定标 光线匹配 光谱匹配 辐射传输 瑞利散射 

分 类 号：P237[天文地球—摄影测量与遥感]