Development status and trend of filter hyperspectral camera (Invited)

While imaging the spatial characteristics of the target, the hyperspectral camera, which combine imaging technology with spectral detection technology, can form multiple narrow bands for each spatial pixel to carry out continuous spectral coverage. Spectral information can fully reflect the differences in physical structure and chemical composition of the ground features. Compared with traditional spatial two-dimensional imaging, it can obtain spatial and spectral information of the target at the same time. Under a certain spatial resolution, a wide continuous spectrum can be obtained. The unique continuous characteristic spectrum has outstanding advantages in accurate identification and detection of ground objects. It has become an important cutting-edge technology for remote sensing of the ground. And it is widely used in the investigation of agriculture, forestry, water, soil, minerals resources and environment monitoring. With the rapid development of filter coating technology, it has greatly promoted the development of hyperspectral cameras based on the principle of filter splitting. At present, this type of hyperspectral cameras become an important part of the hyperspectral remote sensing payload and have been widely used in the networking of nano-satellite hyperspectral constellations because of the wide range, high spatial resolution, and high spectrum. Hyperspectral cameras based on the principle of filter splitting were reviewed, and typical hyperspectral imaging payloads at home and abroad and other systems being studied were introduced. The technical solutions, performance indicators and application prospect of these systems were analyzed. The technical characteristics, advantages and disadvantages of hyperspectral cameras based on the principle of filter were explained. Finally, the development trend of filter hyperspectral was prospected.