数字微镜光谱仪在应用中编码矩阵的选取至关重要。 最佳的理论编码矩阵H矩阵存在非循环、 编码复杂、 双光路系统实现困难的问题而得不到广泛应用; 而最佳实用S矩阵较H矩阵信噪比提高优势略逊。 为此本文针对数字微镜光谱仪设计了一种互补S编码矩阵, 介绍了其构造、 实现过程以及对杂散光和暗电流噪声的削弱作用, 通过对其噪声改善程度理论的分析, 说明该算法结合了H矩阵与S矩阵的优点, 达到了理论与实用的双优。 经实验验证, 该算法较S矩阵编码模板信噪比提高了2.05倍。

The template selection is essential in the application of digital micromirror spectrometer. The best theoretical coding H-matrix is not widely used due to acyclic, complex coding and difficult achievement. The noise ratio of best practical S-matrix for improvement is slightly inferior to matrix H. So we designed a new type complementary S-matrix. Through studying its noise improvement theory, the algorithm is proved to have the advantages of both H-matrix and S-matrix. The experiments proved that the SNR can be increased 2.05 times than S-template.