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The structure of the imaging spectrometer consists of an entrance slit, a dispersion system, an imaging system and one or more exit slits. The electromagnetic radiation of the radiation source is separated into the required wavelength or wavelength region by the dispersive element, and the intensity is measured at the selected wavelength. The radiant energy of the ground target passes through the pointing lens, is collected by the objective lens and irradiated on the dispersive element through the slit enhanced collimation, the dispersive element is spectrally dispersed in the straight strip direction, and the condenser lens is used to converge and image the two-dimensional CCD used in the sensor. The area array exploration elements are scattered on the focal plane of the spectrometer.

Like other spectral imaging, hyperspectral imaging collects and processes information from the electromagnetic spectrum. The goal is to obtain the spectrum of each pixel in the scene image, which can be used to find objects, identify materials or detect processes. There are two types of spectral imaging. One is push-broom scanning, which can read images over time, and the other is snapshot hyperspectral imaging, which generates images instantly when staring at the array.

The ATP9110 Field spectrum instrument system can measure the spectrum of different bands of ground features such as the canopy and the ground surface, reflecting the true situation of the ground surface reflection and radiation, and can be used to study the spectral characteristics of the surface of different ground features. The change characteristics of the spectrum of the measured ground object over time.

The sun is a hot ball, it can radiate sublight. When the sun shines around the Atmosphere,  Before sun lights been absorbed by the atmosphere,  The range remarked in yellow shows a complete spectrum covering 200-2500nm,  After being absorbed by the atmosphere, only red remarked sunlight can shine on the earth. You see from 250 to 300, this range is absorbed by the ozone, however, it's reported.that ozone layers being damaged above the sky of south pole,  so that dangerous uv light shines directly on the earth, which could be a potential risk of skin cancer.