The invention discloses a method and equipment for estimating soil salinity through a multi-spectral image of an unmanned aerial vehicle. The equipment used in the method comprises the unmanned aerial vehicle, a multi-spectral camera assembled on the unmanned aerial vehicle and sampling equipment for sampling soil. The sampling equipment comprises a sampling machine main body, a cantilever mechanism is assembled on the sampling machine main body, a rotating sheet is in pin joint with the end part of the cantilever mechanism, a worm gear box is welded on the rotating sheet, a worm gear and a motor connected with the worm gear are arranged in the worm gear box, a worm is meshed in the worm gear box, and a sampling drill rod is connected with the tail end of the worm. The spectral information and the textural features of the multispectral image are utilized, sensitive variables are doubly screened, a learning model is constructed, and compared with an inversion model established by a single spectral index, the precision and the inversion effect of the inversion model are improved to a certain extent through the combination of the textural features and the spectral information; the problem that the salinity inversion precision of the vegetation-covered soil in the farming area is not enough is solved.

    本发明公开了无人机多光谱影像对土壤盐分估测的方法及设备,该方法所使用的设备包括无人机、装配在无人机上的多光谱相机以及用于土壤取样的取样设备;取样设备包括取样机主体,在取样机主体上装配有悬臂机构,在悬臂机构的端部销接有转动片,在转动片上焊接有蜗轮盒,蜗轮盒内设有蜗轮以及与蜗轮相连的电机,在蜗轮盒内啮合有蜗杆,蜗杆的末端连接有取样钎。利用多光谱影像的光谱信息及纹理特征,通过双重筛选敏感变量,构建学习模型,相较于单一光谱指数建立的反演模型,纹理特征及光谱信息组合在一定程度上提高了反演模型精度与反演效果,解决了农耕区植被覆盖土壤盐分反演精度不够的问题。


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    Title :

    Method and equipment for estimating soil salinity by using multi-spectral image of unmanned aerial vehicle


    Additional title:

    无人机多光谱影像对土壤盐分估测的方法及设备


    Contributors:
    ZHAO WENJU (author) / MA FANGFANG (author)

    Publication date :

    2023-09-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B64U / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / G06V



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