Method, device and equipment for monitoring corn lodging through laser radar and medium

Abstract

The invention provides a method, device, equipment and medium for monitoring corn lodging through laser radar, and relates to the field of corn lodging severity level monitoring, and the method comprises the steps: building a canopy height model in a total monitoring region based on laser radar data; based on the canopy height model in the total monitoring area, screening out the plant height of all non-lodging corns and the plant height of all lodging corns in a target monitoring area; and determining a corn lodging severity level corresponding to the target monitoring area based on the plant heights of all the non-lodging corns and the plant heights of all the lodging corns in the target monitoring area. According to the method, the plant height of the non-lodging corn in different target monitoring areas is taken as a measurement standard, the monitoring is accurate, the objectivity is high, the most obvious change after the corn lodging is reflected on the plant height and the lodging angle, the severity of the lodging stress on the corn is visually and quantitatively described, the disaster diagnosis accuracy is improved, the response speed is high, and the method is suitable for popularization and application. The method is not limited by illumination conditions and is suitable for changeable meteorological environments in disaster areas.

Description

technical field [0001] The invention relates to the field of corn lodging severity monitoring, in particular to a method, device, equipment and medium for monitoring corn lodging by laser radar. Background technique [0002] At present, the monitoring methods for corn lodging disasters mainly include manual survey methods, UAV low-altitude remote sensing technology and satellite remote sensing technology, but they all have their own shortcomings: [0003] The manual survey method is simple and intuitive, but the accuracy of this method depends on the work experience of the investigators, the standards are not uniform, and the subjectivity is strong. The survey results of different personnel on the same plot often have great differences, errors and randomness larger. In addition, the survey efficiency is low, and it is seriously affected by weather conditions. Only a small area can be surveyed per unit time, and the representativeness of the survey area cannot be guaranteed....

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a method, device, equipment and medium for monitoring corn lodging by laser radar, which is used to solve the defect of inaccurate corn lodging in the prior art

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