Construction and Application of Water Quality Inversion Model of Zhenjiang Ancient Canal based on Spectral Detec-tion Technology
In view of the problems that the difficulty of fast and comprehensive monitoring of water quality in river courses in cities,rapid detection of the impact of rainfall overflow pollution on rivers,the Ancient Canal in Zhenjiang City was taken as the research object.Based on the hyperspectral remote sensing method of unmanned aerial vehicle,hyperspectral imager e-quipped with unmanned aerial vehicle was adopted to acquire hyperspectral images and collect water quality parameters syn-chronously,and the spectral characteristics of typical urban water bodies were analyzed.The correlation between the original and differential spectra and water quality parameters was studied,the characteristic spectral parameters were determined,and the inversion model of water quality parameters was established.Analysis and evaluation were conducted from the perspective of model fitting degree and error accuracy,based on the comparative analysis between the measured values of water quality pa-rameters TN(total nitrogen)and TP(total phosphorus)and the predicted values of the model,the best inversion model was selected,and the universality of the water quality parameter inversion model was verified.The spatial distribution map of water quality elements of the Ancient Canal in Zhenjiang City was drawn to realize the visualization of water quality element concen-tration.The rapid detection method of abnormal water quality in small and micro rivers in cities was constructed to provide the-oretical support for the rapid diagnosis of abnormal water quality.
UAVhyperspectralZhenjiang Ancient Canalwater quality elementsretrieval
NETL
NSTL
万方数据
