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28 May 2014 Optical design of wide swath hyperspectral imager
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This paper describes a design concept for wide swath hyperspectral imager. The challenge is to meet the requirement of good image quality and high precision registration from 400nm to 2500nm. A new type spherical prism imaging spectrometer is presented in the paper. The swath of system can reach 60 kilometer from a 600km sun-synchronous orbit with 30 meter ground sample distance (GSD). The optical system consists of a TMA objective and 2 30mm-slit spherical prism spectrometer operating both VNIR and SWIR. Key features of the design include (1) high signal to noise ratio for high efficiency of F-silica prism; (2) high precision band registration for same spectrometer operating from 400nm to 2500nm.
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Yueming Wang, Liyin Yuan, and Jianyu Wang "Optical design of wide swath hyperspectral imager", Proc. SPIE 9104, Spectral Imaging Sensor Technologies: Innovation Driving Advanced Application Capabilities, 910404 (28 May 2014); doi: 10.1117/12.2048900;

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