基于BP神经网络的夏玉米多生育期叶面积指数反演研究

刘俊,孟庆岩,葛小三,刘顺喜,陈旭,孙云晓

Leaf Area Index Inversion of Summer Maize at Multiple Growth Stages based on BP Neural Network

Jun Liu,Qingyan Meng,Xiaosan Ge,Shunxi Liu,Xu Chen,Yunxiao Sun

图3 S型函数与双曲正切S型函数图像

Fig.3 Log-sigmoid function and Tan-sigmoid function