Hyperspectral Imaging System Based On Savart Polariscope For Small UAVs

Hyperspectral imaging technology combining spectral technology and imaging technology can simultaneously acquire the target spectral information and spatial information,and has been widely used in environmental monitoring,precision agriculture,urban planning and many other areas.Light and small unmanned aerial vehicle platform has a great advantage for the hyperspectral imaging system because of its high flexibility,low cost,good real-time advantages.Compared with the dispersion-type hyperspectral imaging system,the interference-type hyperspectral imaging system's target detection capability in the low-light environment is stronger because of its advantages of high-throughput and multi-channel,but now low-altitude unmanned aerial vehicle platform equipped with interference-type spectrometer is relatively rare.Based on the study of the principle of interferometric spectroscopy,this paper attempts to build an interference-type spectrometer based on the Savart plates for small UAVs.The main contents of this paper are as follows:1.The principle of interferometric imaging spectroscopy is described in detail,and further analysis the imaging principles,work mode and advantages for small UAVs of interference-type spectrometer based on the Savart plates.2.Develop an unmanned airborne hyperspectral imaging systems based on Savart plates and detail the development of hyperspectral imaging systems and airborne data acquisition and control system designs.Hyperspectral imaging system built achieve high spectral imaging requirements in visible light with wave number resolution 131cm-1.3.The Push-broom experiment is carried out by using the developed airborne hyperspectral imaging system,and describe the spectral inversion process,access to the indoor target spectral data cubes and the influence of UAV attitude change on system in detail.