Method for monitoring and evaluating river by applying unmanned aerial vehicle surveying and mapping

A UAV and river technology, applied in unmanned aerial vehicles, surveying and navigation, water resource assessment, etc., can solve problems such as the inability to fully and accurately reflect the physical habitat of rivers, natural conditions, and human subjective factors.

Active Publication Date: 2020-07-14
JINAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the existing evaluation method of manually patrolling rivers, which is easily affected by natural conditions and human subjective factors, and has technical defects that cannot fully and accurately reflect the physical habitat conditions of rivers, the present invention provides an application of UAV surveying and mapping Methods for monitoring and assessing rivers

Method used

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  • Method for monitoring and evaluating river by applying unmanned aerial vehicle surveying and mapping
  • Method for monitoring and evaluating river by applying unmanned aerial vehicle surveying and mapping
  • Method for monitoring and evaluating river by applying unmanned aerial vehicle surveying and mapping

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Embodiment 1

[0039] Such as figure 1 As shown, a method of monitoring and evaluating rivers using UAV surveying and mapping includes the following steps:

[0040] S1: Preset the flight route of the UAV and control the flight of the UAV, and obtain image data on the flight route;

[0041] S2: According to the image data, use the motion recovery shape algorithm to perform photogrammetric reconstruction of the UAV nadir image to construct 3D terrain information;

[0042] S3: Use the Vextractor program to estimate the basic shape of the streamline of the river based on the image data on the 3D terrain information, and fit it into the river tortuosity index of the main channel section;

[0043] S4: Using the RGB orthophoto measurement program, combined with 3D terrain information to calculate the orthophoto spectral index, to obtain the quantitative and qualitative information of the river;

[0044] S5: Assessment of the physical environment of the river based on the meandering index of the m...

Embodiment 2

[0063] More specifically, on the basis of Example 1, the study area of ​​the Hostavicky Creek in Prague is a 1 km long urbanized area that underwent a complex restoration in 2015, assessing that the river is located on the northeast boundary of the Prague metropolitan area, in the old housing and the area between the new development zone. The stream was channelized during the construction of new road and highway infrastructure in the area in the 1980s. Thanks to the development of new residential areas, in 2015 the City of Prague realized a complex regional revitalization project aimed not only at restoring the meandering system of the river, but also at creating recreational infrastructure for the public, including cycle paths, playgrounds and parks. The complex of the entire restoration project includes grassy areas along the river banks and the planting of trees to stabilize the new pathways.

[0064] The monitoring design of the river restoration area of ​​the present inv...

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Abstract

The invention provides a method for monitoring and evaluating a river by using unmanned aerial vehicle surveying and mapping. The method comprises the following steps: acquiring image data by using anunmanned aerial vehicle; reconstructing the image data by using a motion recovery shape algorithm to construct 3D topographic information; utilizing a Vextractor program to speculate the basic shapeof the river streamline on the 3D topographic information according to the image data, and fitting the basic shape into a river curvature index of the main river channel section; calculating an ortho-image spectral index by using an RGB ortho-image measurement program to obtain river quantitative and qualitative information; and evaluating the physical environment of the river according to the curvature index and the quantitative and qualitative information of the river. The invention provides a river monitoring and evaluating method. The unmannedaerial vehicle is taken as the infrastructure,a motion recovery shape algorithm, a Vextracto program and an RGB ortho-image measurement program are utilized to track the eutrophication process in the large river and reflect the change process ofeutrophication and vegetation overgrowth, and the method has very important application value for long-term monitoring and ecological restoration of the large river.

Description

technical field [0001] The invention relates to the technical field of aquatic ecosystems, and more specifically, relates to a method for monitoring and evaluating rivers by using unmanned aerial vehicle surveying and mapping. Background technique [0002] With the increasing impact of human activities on the ecosystem, rivers are facing more serious ecological problems: the phenomenon of undisturbed rivers, canalization, and encroachment of waterfront space have caused the dynamic diversity of river ecosystems to become more stable and balanced. quality, resulting in the degradation of biodiversity and ecosystem services. In river restoration projects, there is often a lack of systematic post-project monitoring and assessment of further evolution of the restoration system, and this lack of information makes it difficult to assess restoration effectiveness. [0003] The bible of large-scale rivers has the characteristics of long change period and relatively stable, but ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C13/00G01C11/02B64C39/02
CPCG01C13/00G01C11/025B64C39/02B64U2101/00Y02A90/30
Inventor 王赛秦颖君冯喻罗邦科何佰东张锦华杨扬
Owner JINAN UNIVERSITY
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