Abstract In this paper, a two-position rotating grating compressed sensing spectrometer is proposed, which can expand the spectrum measurement range nearly twice without losing high resolution. In the entire measurement process, two compressed sensing samples are taken for two spectral segments respectively, but through mathematical transformation, only one calculation is performed to reconstruct the whole spectrum. A spectroscopic experimental system is established, and spectral integration and line calibration are performed. The spectral resolution of the spectrometer is better than 0.6 nm, and the spectrum measurement range is 325.2 nm–737.1 nm. Finally, the transmission spectrum of a liquid solution is measured using the proposed spectrometer, and the influence of sampling ratio on the quality of spectral reconstruction is investigated.

中文翻译：

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基于二位旋转光栅的高分辨率宽量程压缩传感光谱仪

摘要 本文提出了一种二位旋转光栅压缩传感光谱仪，它可以在不损失高分辨率的情况下将光谱测量范围扩大近两倍。在整个测量过程中，对两个频谱段分别取两个压缩感知样本，但通过数学变换，只需进行一次计算即可重构整个频谱。建立光谱实验系统，进行光谱积分和线标定。光谱仪的光谱分辨率优于0.6 nm，光谱测量范围为325.2 nm-737.1 nm。最后，使用所提出的光谱仪测量了液体溶液的透射光谱，并研究了采样率对光谱重建质量的影响。