A method for monitoring river water quality based on high-resolution remote sensing satellites

Abstract

A river water quality monitoring method based on a high-resolution remote sensing satellite comprises the following steps: the high-resolution remote sensing satellite acquires a high-resolution remote sensing image a of a river to be monitored from a ground station, and transfers the digital topographic map of the region of the river to be monitored; a preprocessing module preprocesses the high-resolution remote sensing image a to obtain n high-resolution remote sensing images c of the image capable of displaying the complete river to be monitored at different wavebands; a controller performsregression analysis on the actual mass concentration of each reference position point and the reflectivity of each reference position on the high-resolution remote sensing images c to obtain a corresponding regression equation, and establishes a relationship function between the actual mass concentration of every reference position point and the reflectivity at every reference position on every high-resolution remote sensing image c based on the regression equation with a smallest dispersion degree; and the controller calculates the reflectivity of a monitoring point on each of the n high-resolution remote sensing images c, and calculates the water quality parameter mass concentration at the monitoring point according to the relationship function.

Description

Technical field [0001] The invention relates to a method for monitoring river water quality based on a high-resolution remote sensing satellite. Background technique [0002] River water quality monitoring is one of the main contents of environmental monitoring. It accurately, timely, and comprehensively reflects the status and development trend of water quality, provides scientific basis for water environmental management, pollution source control, environmental planning, etc., and provides comprehensive water environmental protection and water pollution control And it plays a vital role in maintaining the health of the water environment. At this stage, there are mainly two methods for monitoring river water quality: [0003] 1. Traditional physical and chemical monitoring [0004] After investigating and researching the monitoring targets, determine the monitoring network, arrange the sampling time and determine the sampling frequency, and perform physical and chemical analysis o...

AI Technical Summary

Problems solved by technology

[0005] 1) There are too many variable factors in the whole process, and as long as there is an error in the determination of sampling frequency, monitoring point, and analysis method, the monitoring result will be distorted;

[0006] 2) Only monitoring points can be monitored, and global monitoring cannot be achieved;

[0007] 3) The number of monitoring points determines the monitoring cost. The number of monitoring points is small, and the monitoring effect is not good. There are many monitoring points, and the cost is high. It is difficult to control the cost when monitoring a wide river;

[0008] 4) Human errors and equipment failures in the monitoring process will affect the monitoring data;

[0009] 5) It can only be monitored regularly, and continuous long-term dynamic monitoring cannot be achieved

[0012] 1) Unable to qualitatively and quantitatively measure water pollution;

[0013] 2) The sensitivity and specificity of detection are not as good as physical and chemical detection;

[0014] 3) Some biological tests take longer

[0015] In summary, there are still deficiencies in the current water quality monitoring methods, which cannot meet the current monitoring needs.