Fig. 1. Flight experiment of vertical takeoff and landing fixed wing aircraft with a mounted KP-8 multispectral camera

Fig. 2. Flight route， image coverage and water sampling points of multispectral UAV in Luhun Reservoir

Fig. 3. Reflectance correction for eight wavebands of UAV multispectral image

Fig. 4. Scatterplots of measured water quality parameters and reflectance band radio of synchronous KP-8 multispectral image

Fig. 5. Validation scatterplots of model-predicted water quality parameters and measured in situ

Fig. 6. Distribution map of water quality parameters of Luhun Reservoir retrieved from UAV KP-8 multispectral image on September 29， 2021