Study on thermal infrared emission directionality over crop canopies with TIR camera imagery

摘要

In order to investigate directionality of thermal infrared emission from crop canopies, a wide-angle thermal video camera (INFRAMETRICS) equipped with an 80~0 FOV lens was mounted on a small aircraft and used to acquire thermal imagery along several different flight traces. Ac- cordingly, 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.