The application of GS spectroscopy can provide technical support for rapid monitoring and contamination evaluation of soil heavy metal content in agricultural fields on a large scale, and provide technical and theoretical support for further application of airborne or satellite-based hyperspectral remote sensing for quantitative monitoring of soil heavy metal contamination. There are still many objective factors that have yet to be resolved in the field monitoring of soil heavy metal content. When acquiring GS spectral data, the influence of meteorological conditions such as wind size, solar altitude angle, cloud limit or the particle size of the soil itself, the flatness of the soil surface, moisture content, etc. can affect the acquisition of spectral data
Fuel combustion is a transient chemical reaction kinetic process. Scientists use traditional photoelectric technology, combined with laser technology, spectroscopy technology, and image processing technology to analyse the temperature, composition and other parameters of the combustion field, and optimize the spray combustion of the engine. It is of great significance to improve combustion efficiency and reduce pollutants.
Raman Spectroscopy has been widely used in analyze solid and liquid phase sample, but not so much in gas phase sample . Main problem is, normally, the gas phase molecular under the laser illumination is too much less than the same laser illuminate the liquid or solid phase sample. So that, in generally, the Raman signal scattered from the gas phase sample will be too weak to be detected.
Based on rice tillering stage of agricultural precision fertilizer as the research object, using unmanned aerial vehicle imaging hyperspectral remote sensing image of nitrogen concentration inversion model is established through the PSO -ELM, comprehensive consideration of agricultural related operation parameters, combined with the experts recommend fertilization build according to standard field, build the precision fertilizer model, finally using unmanned aerial vehicle precision fertilizer in agriculture.