Photonics, Vol. 12, Pages 918: Design and Series Product Development of a Space-Based Dyson Spectrometer for Ocean Applications

Photonics doi: 10.3390/photonics12090918

Authors:
Xinyin Jia
Siyuan Li
Xianqiang He
Zhaohui Zhang
Pan Hou
Xin Jiang
Jia Liu

An advanced Dyson spectrometer is proposed that redesigns the Dyson prism to make the entire system coaxial and easy to implement for each subassembly, thus greatly enhancing optical design, optical processing, and system alignment. The design concept and fabrication methods, as well as the results of imaging evaluations of the proposed spectrometer, are described in detail. At present, the advanced Dyson spectrometer has been in orbit for more than a year, serving smart agriculture and marine applications. The advanced imaging spectrometer achieves high resolution in both the spectral and spatial directions and low spectral distortion at a high numerical aperture in the working waveband. On the basis of the above research, we have developed three other imaging spectrometers with different performance indicators, including a space-based instrument, an airborne instrument and a ground-based instrument, thus verifying the progress and versatility of advanced Dyson spectrometer technology.

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Xinyin Jia www.mdpi.com