红外定标中目标比辐射率的测量方法探讨  

Discussion on the Measuring Method for the Target Emissivity in the Infra-Red Calibration

作　　者：任洪启[1] 陈清莲[1] 

机构地区：[1]国家海洋局海洋技术研究所

出　　处：《海洋技术》1998年第4期17-23,共7页Ocean Technology

摘　　要：卫星遥感技术是获取目标信息的重要手段。用红外方法获得的目标温度是其比辐射率ε的函数。为了提高卫星资料的定量化应用及传感器的准确定标和对大气修正算法的精度进行检验，需要知道与卫星同步的精确的地物目标的真实温度。本文就野外现场测量地物比辐射率的方法进行了理论推导，给出相应的辅助设备，分析该方法可能产生的误差。The satellite remote-sensing technology is an important means of acquiring target information.The target temperature obtained using the infra-red method is a function of its emissivity ε.To improve the quantified application of satellite data and the accurate calibration of sensors,and test the accuracy of the atmospheric correction algorithm,it is necessary to know the accurate true temperature of the objects in synchronism with the satellite.This paper makes a theoretical derivation from the method for field in-situ measurement of object emissivity,gives the corresponding auxiliary equipment and analyses the possible errors which its method may make.

关 键 词：红外定标 比辐射率 测量法 卫星遥感 环境遥感 

分 类 号：TP722.6[自动化与计算机技术—检测技术与自动化装置] X87[自动化与计算机技术—控制科学与工程]