FLUORESCENCE LIDAR MULTICOLOR IMAGING OF VEGETATION
FLUORESCENCE LIDAR MULTICOLOR IMAGING OF VEGETATION
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DOI：
10.1364/ao.33.002471
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发表时间：
1994-05-01
期刊：
影响因子：
1.9
通讯作者：
WALLINDER, E
中科院分区：
文献类型：
--
作者：
EDNER, H;JOHANSSON, J;WALLINDER, E
报道了50 m距离上激光激发下植被荧光的多色成像。移动激光雷达系统配备了Nd:YAG激光发射机和直径40厘米的望远镜。激光拉曼位移到397 nm，脉冲能量约为30 mJ。利用图像增强CCD相机和特别设计的分光镜卡塞格尼望远镜，同时记录了叶和枝在四个不同光谱波段的荧光图像。此外，在检测区域内的选定点荧光光谱测量与图像增强二极管阵列系统。图像处理可以提取与植被生理状况有关的信息，并可能在森林衰退研究中证明是有用的。
Multicolor imaging of vegetation fluorescence following laser excitation is reported for distances of 50 m. A mobile laser-radar system equipped with a Nd:YAG laser transmitter and a 40-cm-diameter telescope was utilized. The laser light was Raman shifted to 397 nm with pulse energies of approximately 30 mJ. An image-intensified CCD camera with a specially designed split-mirror Cassegrainian telescope was utilized for the simultaneous recording of fluorescence images of leaves and branches in four different spectral bands. Additionally, fluorescence spectra at selected points within the detection area were measured with an image-intensified diode array system. Image processing permits extraction of information related to the physiological status of the vegetation and might prove useful in forest decline research.