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地表热红外辐射方向特性的航空飞行试验研究 被引量:6
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作者 柳钦火 顾行法 +6 位作者 李小文 F.Jacob J. F. Hanocq M.Friedl A.H.Strahler 余涛 田国良 《中国科学(E辑)》 CSCD 2000年第z1期99-105,113,共8页
为了研究农作物冠层的热红外辐射的方向变化特性,一台装备80°视场角广角 镜头的宽波段红外热像仪被安置在小型飞机上,沿不同的航线获取同一地区的热红外 多角度图像,传感器以不同的观测角瞄准地面同一目标、因而可以获得同一... 为了研究农作物冠层的热红外辐射的方向变化特性,一台装备80°视场角广角 镜头的宽波段红外热像仪被安置在小型飞机上,沿不同的航线获取同一地区的热红外 多角度图像,传感器以不同的观测角瞄准地面同一目标、因而可以获得同一地表目标 热红外辐射的多角度信息.介绍了机载多角度热红外遥感图像的处理原理、方法及处理 结果,并分析了几种典型农作物在不同生长季节热红外辐射方向性的变化规律。 展开更多
关键词 热红外辐射 方向特性 航空飞行试验 农作物冠层
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Study on thermal infrared emission directionality over crop canopies with TIR camera imagery 被引量:3
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作者 柳钦火 顾行法 +6 位作者 李小文 田国良 余涛 F.Jacob J.F.Hanocq M.Friedl A.H.Strahler 《Science China(Technological Sciences)》 SCIE EI CAS 2000年第S1期95-103,113,共10页
In order to investigate directionality of thermal infrared emission from crop canopies, a wide-angle thermal video camera (INFRAMETRICS) equipped with an 80?FOV lens was mounted on a small aircraft and used to acquire... In order to investigate directionality of thermal infrared emission from crop canopies, a wide-angle thermal video camera (INFRAMETRICS) equipped with an 80?FOV lens was mounted on a small aircraft and used to acquire thermal imagery along several different flight traces. Accordingly, multi-angle directional brightness temperatures were acquired at different view angles for individual pixel. The flight experiment was carried out from January 1997 to October 1997 over a 5 kmx5 km flat agricultural area, located near Avignon, southeastern France.This paper presents results from analyses performed using these data including instrument calibration, radiometric correction, atmospheric correction, temperature temporal adjustment, geometric matching and registration of images. Results are presented for different thermal infrared emission patterns of different surface types including bare soil, wheat, maize and sunflower at different growth stages. 展开更多
关键词 TIR EMISSION DIRECTIONALITY airborne experiment CROP CANOPY
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