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A UAV-Based Near-Earth Remote Sensing Image Acquisition Method

A collection method and remote sensing image technology, which is applied in the field of near-earth remote sensing, can solve the problem of multiple imaging bands of push-broom spectral cameras, and achieve the effect of comprehensive near-earth remote sensing data collection requirements and functional fit

Active Publication Date: 2021-08-31
SOUTH CHINA AGRI UNIV
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Problems solved by technology

The push-broom spectral camera has many imaging bands and can usually reach the hyperspectral level, but it can only work under the constant speed cruise state of the UAV

Method used

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  • A UAV-Based Near-Earth Remote Sensing Image Acquisition Method
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  • A UAV-Based Near-Earth Remote Sensing Image Acquisition Method

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Embodiment

[0012] The structure diagram of the present invention is as figure 1 As shown, the near-earth remote sensing image acquisition method based on unmanned aerial vehicle of the present invention adopts a liquid crystal spectrum camera to be carried on an unmanned aerial vehicle, and sets the working wavelength range, spectrum interval and exposure time of the liquid crystal spectrum camera to collect spectral images; The two-dimensional spatial spectral image of the target object is directly obtained when the camera shoots. If the target area is larger than the camera's primary imaging field of view, the UAV is moved with an image redundancy of 5%-20%, and then the spectral image is stitched.

[0013] In this embodiment, the above-mentioned unmanned aerial vehicle is a multi-rotor unmanned aerial vehicle.

[0014] In this embodiment, the above-mentioned UAV flies at a constant speed or the UAV hovers directly above the target object, and spectral image acquisition methods are div...

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Abstract

The invention discloses a near-earth remote sensing image acquisition method based on an unmanned aerial vehicle. The liquid crystal spectrum camera is mounted on the drone, and the parameters such as the operating wavelength range, spectral interval, exposure time, and frame frequency of the liquid crystal spectrum camera are set to collect spectral images; when the liquid crystal spectrum camera is shot, the two-dimensional spatial spectral image of the target is directly obtained , if the target area is larger than the primary imaging field of view of the camera, according to the different flight speeds of the UAV, different shooting speeds are used to collect spectral images with an image redundancy of 5%-20% in the same band, and then the spectral images are stitched. The near-earth remote sensing image acquisition method based on the UAV of the present invention uses a liquid crystal hyperspectral camera as a spectral image sensing device, combines data acquisition, splicing and analysis methods, and finally realizes two types of hovering remote sensing and fixed-speed flight remote sensing of the multi-rotor aircraft model.

Description

technical field [0001] The invention belongs to a near-earth remote sensing image acquisition method based on a drone in the field of near-earth remote sensing, in particular to a near-earth remote sensing image acquisition method based on a multi-rotor drone, and belongs to a near-earth remote sensing image acquisition method based on an unmanned aerial vehicle innovative technology. Background technique [0002] Near-Earth Remote Sensing refers to the use of sensors to collect spectral information of ground objects at different heights near the ground, which is used to identify the earth's environment and resources, and to classify and identify ground objects. Near-ground remote sensing sensors are usually set on ground platforms, such as mobile vehicles, high-altitude supports, etc. In recent years, with the rapid development of the UAV field and its unique advantages as a remote sensing platform, more and more near-earth remote sensing platforms have chosen UAVs. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G06T3/40
CPCG01N21/255G01N2021/1793G06T3/4038
Inventor 赵静龙腾李继宇龙拥兵
Owner SOUTH CHINA AGRI UNIV
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