| 论文题目 | Analysis of Stray Light and Enhancement of SNR in DMD-Based Spectrometers |
| 论文题目（英文） | Analysis of Stray Light and Enhancement of SNR in DMD-Based Spectrometers |
| 作者 | Chen, Xiangzi;全向前* |
| 发表年度 | 2022年度 |
| 卷 | 22 |
| 期 | 16 |
| 页码 | 11 |
| 期刊名称 | SENSORS |
| 摘要 | |
| 摘要_英文 | Due to advantages such as the high efficiency of light utilization, small volume, and vibration resistance, digital micro-mirror device (DMD)-based spectrometers are widely used in ocean investigations, mountain surveys, and other field science research. In order to eliminate the stray light caused by DMDs, the stray light in DMD-based spectrometers was first measured and analyzed. Then, the stray light was classified into wavelength-related components and wavelength-unrelated components. Moreover, the noise caused by the stray light was analyzed from the perspective of encoding equation, and the de-noising decoding equation was deduced. The results showed that the accuracy range of absorbance was enhanced from [0, 1.9] to [0, 3.1] in single-stripe mode and the accuracy range of absorbance was enhanced from [0, 3.8] to [0, 6.3] in Hadamard transform (HT) multiple-stripe mode. A conclusion can be drawn that the de-noising strategy is feasible and effective for enhancing the SNR in DMD-based spectrometers. |
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