Method and system for monitoring aquatic vegetation based on unmanned aerial vehicle

Abstract

The invention discloses a method and a system for monitoring aquatic vegetation based on an unmanned aerial vehicle. The method comprises the following steps that (10), in the general investigation of the aquatic vegetation: the unmanned aerial vehicle flies above water areas along a set route, collects millimeter-wave radiometric data along the route, and transmits aquatic-vegetation radiometric data and position information in the radiometric data along the route to a ground control console; (20), in the detailed investigation of the aquatic vegetation: the ground control console preliminarily and briefly judges the water area to be intensively monitored according to the aquatic-vegetation radiometric data and the position information, and controls the unmanned aerial vehicle to carry out conical scanning on the water area to be intensively monitored, to obtain the radiometric image of the water area, meanwhile, to photograph the optical image of the water area, and to transmit the radiometric image and the optical image to the ground control console; (30), in the analysis of the aquatic vegetation: the ground control console carries out treatment on the radiometric image, carries out comparative analysis with the optical image, determines the distribution range, the polluted site and the pollution level of the aquatic vegetation, and realizes real-time monitoring. The system comprises an information collection device (2) carried in the unmanned aerial vehicle (1) and the control console (3) located on the ground. The method and the system which are provided by the invention work in all-day and all-weather manners, and high in monitoring precision.

Description

technical field [0001] The invention belongs to the technical field of water environment monitoring, in particular to an unmanned aerial vehicle-based aquatic vegetation monitoring method and system. Background technique [0002] Real-time monitoring of water pollution in large areas is one of the effective ways to prevent illegal and illegal discharge of sewage and wastewater, and timely control water pollution, such as the pollution of water environment by fast-growing aquatic plants such as blue-green algae. [0003] Water pollution monitoring in large areas mainly adopts remote sensing monitoring and UAV monitoring. [0004] Remote sensing monitoring of water pollution has the characteristics of fast, macroscopic and real-time. Its data can directly reflect the distribution of water pollution in the region, and it is an effective way to monitor the pollution of large areas of water. However, it has the problems of high cost of use and insufficient precision of fixed-poi...

AI Technical Summary

Problems solved by technology

[0006] However, existing UAV-based water pollution monitoring uses optical or infrared means for the pollution of fast-growing aquatic vegetation.

Due to the high resolution of the optical sensor, the accuracy of this method is high in clear days, but in dark nights, rainy days, and haze weather, its monitoring accuracy is greatly reduced, and it is difficult to meet the real-time monitoring needs of fast-growing aquatic vegetation.

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