| Water quality in the Pearl River Estuary Lingdingyang sea area has changed a lot,with time and space going by.It is the result of the interaction of natural factors and human factors.The application of remote sensing monitoring in coastal water quality can reflect the water more macro,fast and accurate.Compared with the traditional method in the sampling analysis limited by the time and space,the remote sensing water quality monitoring will be a kind of development trend.This paper selects the Lingdingyang in the Pearl River Estuary as the study area,obtains the concentration of water quality parameters through sampling,while using the ASD spectrometer on the water for synchronous spectrum measurement.The Landsat8_OLI image is processed by FLAASH atmospheric correction.The main results of this study are as follows:(1)Wavelength 520 nm has a higher positive correlation of chlorophyll a concentration and the wavelength of 600 nm has higher negative correlation.Wavelength 683 nm have a higher positive correlation of suspended matter concentration and the wavelength of 567 nm has higher negative correlation.(2)This paper makes the correlation analysis of measured ASD hyperspectral bands and their combinations with chlorophyll a concentration and suspended matter concentration,and then establishes the remote sensing inversion model respectively.(3)This paper makes the correlation analysis of Landsat8_OLI image bands and their combinations with chlorophyll a concentration and suspended matter concentration,and then establishes the remote sensing inversion model respectively.(4)According to the inversion of OLI satellite images,the west coast of the Pearl River Estuary Lingdingyang chlorophyll a and suspended solids concentration were higher than the east coast of the Pearl River estuary. |
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