Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5448978 | Optics Communications | 2018 | 6 Pages |
Abstract
We present a multiplex coded Hadamard transform spectrometer with which Hadamard H-matrix is employed to encode the entrance pixels. Specifically, the Hadamard H-matrix is divided into two coding matrices, H+ and Hâ; here Hâ=HâJâ2 and H+=H+Jâ2, where each element of J equals 1. We analyzed its denoising capability and compared with the ordinary Hadamard spectrometer with cyclic-S matrix coded and slit spectrometers. The simulation and experiment show that the proposed Hadamard spectrometer with H-matrix outperforms Hadamard transform spectrometer with cyclic-S matrix, gaining about 2 dB of the signal-to-noise ratio.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Jiang Yue, Jing Han, Long Li, Lian-fa Bai,