基于多角度高光谱与小波变换的冬小麦LAI监测

白燕, 及嘉兴, 闫晓斌, 白娟, 乔星星, 赵钰, 王超, 冯美臣, 肖璐洁, 宋晓彦, 张美俊, 杨武德, 李广信

Monitoring Winter Wheat LAI Based on Multi-Angle Hyperspectral Data and Wavelet Transform

Bai Yan, Ji Jiaxing, Yan Xiaobin, Bai Juan, Qiao Xingxing, Zhao Yu, Wang Chao, Feng Meichen, Xiao Lujie, Song Xiaoyan, Zhang Meijun, Yang Wude, Li Guangxin

表3 冬小麦LAI多角度高光谱监测模型表现

Table 3 Performance of multi-angle hyperspectral monitoring models for LAI of winter wheat

变量 Variable 观测角度 Observation angle RF BPNN R2 RMSE RPD R2 RMSE RPD 原始光谱Original spectrum 0°, 0° 0.647 1.225 1.684 0.608 1.249 1.597 0°, 30° 0.655 1.172 1.702 0.619 1.230 1.621 0°, 60° 0.639 1.239 1.665 0.576 1.343 1.536 90°, 30° 0.477 1.491 1.383 0.406 1.590 1.297 90°, 60° 0.633 1.249 1.652 0.569 1.355 1.522 180°, 30° 0.550 1.379 1.490 0.527 1.418 1.454 180°, 60° 0.591 1.320 1.563 0.533 1.404 1.463 小波能量系数 Wavelet energy coefficient 0°, 0° 0.731 1.069 1.930 0.708 1.078 1.851 0°, 30° 0.790 0.913 2.184 0.737 1.024 1.948 0°, 60° 0.751 0.994 2.006 0.690 1.149 1.795 90°, 30° 0.679 1.168 1.766 0.628 1.258 1.640 90°, 60° 0.727 1.078 1.913 0.676 1.175 1.756 180°, 30° 0.693 1.106 1.804 0.675 1.176 1.754 180°, 60° 0.687 1.115 1.789 0.652 1.217 1.695