滤光片分光型高光谱相机发展现状及趋势（特邀）

高光谱相机可将成像技术与光谱探测技术相结合，在对目标空间特征成像的同时，可以对每个空间像元形成多个窄波段实现连续的光谱覆盖，不同光谱信息能充分反映地物内部的物理结构、化学成分的差异。与传统的空间二维成像相比，高光谱相机可以同时获取目标的空间和光谱信息，在一定的空间分辨率下，能够获取宽谱段范围内地物独有的连续特征光谱，对地物的精准识别和探测具有显著优势，目前已成为对地遥感重要的前沿技术手段，在农、林、水、土、矿等资源调查与环境监测等领域具有重要的应用价值。随着滤光片镀膜技术的飞速发展，极大地促进了滤光片分光型高光谱相机的研制，目前基于滤光片分光原理的高光谱相机以大幅宽、高空间分辨率、高光谱分辨率和轻小型的优势成为高光谱遥感载荷的重要组成部分，在微纳卫星高光谱星座组网中获得广泛应用。主要对滤光片分光型的高光谱相机进行了综述，介绍了国内外典型滤光片分光型星载高光谱成像载荷，以及地面在研的滤光片分光型高光谱成像系统，并分析了这些系统的技术方案、性能指标及应用前景，阐述了基于滤光片分光原理的高光谱相机的技术特点和优缺点，最后展望了滤光片分光型高光谱相机的发展趋势。

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.