摘要
目标红外辐射测量是目标特性获取和目标识别的重要手段之一。在大气中测量目标辐射特性时,需要考虑目标与红外测量系统之间的大气透过率和程辐射。建立了大气中目标辐射测量模型,分析了辐射测量精度。利用长波红外相机对ISDC黑体进行了红外辐射测量实验,并利用MODTRAN软件计算大气透过率和程辐射,对测量数据进行大气修正。实验结果显示,目标辐射反演精度在9.5%～12.3%左右。
Infrared radiation signature measurement of targets is one of important ways for target signature acquirement and target recognition.When measuring the infrared signature of a target in the atmosphere,it is necessary to consider the atmospheric transmittance and the air path raidation between the target and the IR measurement system.A model for target radiation measurement and inversion was established,and precision analysis on the model was given.A longwave infrared camera was used to perform infrared signature measurement experiment on an ISDC extended-area blackbody.Based on atmospheric parameters,the atmospheric transmittance and the air path radiation between the blackbody target and the camera were calculated by using the MODTRAN software,for th of use in atmospheric correction in the target radiation inversion process.The experimental results showed that radiation inversion precisions were about 9.5%~12.3%.
出处
《长春理工大学学报（自然科学版）》
2010年第4期1-3,共3页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
中国科学院知识创新工程领域前沿资助项目
关键词
红外辐射
大气透过率
辐亮度
红外相机
黑体
IR radiation
atmospheric transmittance
radiance
IR camera
blackbody
