Medium-and-small-scale soil water monitoring system and method based on cosmic ray neutron method and UAV (unmanned aerial vehicle) remote sensing

Abstract

The invention discloses a medium-and-small-scale soil water monitoring system based on a cosmic ray neutron method and UAV (unmanned aerial vehicle) remote sensing. The system comprises a cosmic ray fast neutron monitoring system consisting of a CRNP, a solar power supply system and a support; an automatic meteorological station, which is arranged at the periphery of the CRNP and is used for measuring related meteorological data such as air pressure and atmospheric relative humidity; a UAV remote sensing system, which is an unmanned aerial vehicle which carries visible light, near infrared, thermal infrared imaging and / or laser ranging radar (LiDAR) devices and has an aerial photography function; a remote data transmission system; and a data processing center. The invention further provides a corresponding medium-and-small-scale soil water monitoring method. The invention fuses the advantages of accurate macroscopic soil water quantity monitoring of the cosmic ray neutron method and high spatial resolution of UAV (unmanned aerial vehicle) remote sensing and establishes a new medium-small-scale soil water monitoring method and device, and fills the technical blank between point-scale and remote sensing large-scale soil water monitoring.

Description

technical field [0001] The invention relates to a medium and small-scale soil water monitoring system and method which integrate cosmic ray neutron method and unmanned aerial vehicle remote sensing, and belong to the technical field of soil research tools. Background technique [0002] Soil water is an important part of water resources and plays a vital role in the near-surface matter-energy cycle. At present, many agricultural, hydrological, and environmental issues related to soil water, such as precise management of water and fertilizer in farmland, rational regulation of water resources, and control of non-point source pollutants, etc., all focus on small and medium scales ranging from tens of meters to thousands of meters[ 2,3]. The solution to the above problems largely depends on people's understanding of soil water distribution and change information at this scale. This requires people to accurately grasp the macroscopic soil water quantity and its dynamic changes ...

AI Technical Summary

Problems solved by technology

Although the combination of cosmic ray neutron method and high-altitude remote sensing can use CRNP data to calibrate the remote sensing retrieval results; however, due to the insufficient spatial resolution of high-altitude remote sensing, the research results cannot provide moisture monitoring data of small and medium scales with high spatial resolution[61]

For the purpose of this research, high-altitude remote sensing cannot replace UAV remote sensing

However, due to the limitations of technology development and work accumulation, there are still few researches on soil water monitoring that integrate cosmic ray neutron method and UAV remote sensing method.

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