摘要
提出一种对数字微镜进行互补S矩阵编码调制的新方案,经理论分析,互补S矩阵本身具有的优良性质,可将噪声改善度较S矩阵提高约2倍。通过对光谱信号建模,详细推导分析了互补S矩阵应用中的噪声改善理论,证明方案实现的过程中具有削减杂散光和暗电流噪声的作用。最后将其应用于DMD光谱仪中进行实验验证,结果表明:63阶互补S矩阵编码方案较同阶S矩阵编码方案,信噪比提高了1.69倍,与理论分析吻合。
A complementary S- matrix code modulation scheme was designed for digital micromirror spectrometer. The theoretical analysis proved that the complementary S matrix itself had good properties：it could improve for abouttimes of S matrix in respect of noise improvement. It was proved that this scheme could reduce the noise of stray light and dark current in implementing process by detailed deduction and analysis on noise-improvement theory of complementary S matrix through modeling on spectral signatures. When this scheme was applied in DMD spectrometer for experimental verification. The results demonstrate that the 63 order complementary S matrix coding scheme improved for 1.69 times compared with same-order S-matrix coding scheme in signal-to-noise ratio, which is identical with the theoretical analysis.
出处
《红外与激光工程》
EI
CSCD
北大核心
2013年第11期3082-3086,共5页
Infrared and Laser Engineering
基金
国家自然科学基金(61274048)
国家中央高校基本科研业务费(CDJZR10120017)
重庆大学研究生个人创新基金(cdjes12120002)
关键词
互补S矩阵
噪声改善
DMD光谱仪
complementary S matrix
noise-improvement
DMD spectrometer
