The noise suppression method of long-wave infrared Fourier spectrometer at various piecewise

Ruilin Ding; Yaohang Hu; Shuai Wang; Zhixiong Yang; Lingzhi Wang; Mingyao Yuan; Huiqin Shu; Zhenggang Lei

doi:10.1117/12.2651980

23 January 2023 The noise suppression method of long-wave infrared Fourier spectrometer at various piecewise

Ruilin Ding, Yaohang Hu, Shuai Wang, Zhixiong Yang, Lingzhi Wang, Mingyao Yuan, Huiqin Shu, Zhenggang Lei

Proceedings Volume 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology; 1255726 (2023) https://doi.org/10.1117/12.2651980
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

Many industrial gases and aerosols have rich spectral characteristics in the long-wave infrared band, which can play an important role in gas detection and chemical protection. In this paper, the principle of Gaussian filtering and the establishment process of Gaussian operator are introduced, and a noise suppression method of long-wave infrared Fourier spectrometer at various piecewise is proposed. The amplitude of interference signal is mapped into noise estimation weight, and then the size and weight of Gaussian filter window are selected to realize adaptive Gaussian filtering of noise estimation weight. Compared with median filtering, mean filtering and single window Gaussian filtering, the experiment shows that the proposed algorithm can protect the spectral energy and suppress the influence of noise on the signal, and the filtering effect is obvious.

Citation Download Citation

Ruilin Ding, Yaohang Hu, Shuai Wang, Zhixiong Yang, Lingzhi Wang, Mingyao Yuan, Huiqin Shu, and Zhenggang Lei "The noise suppression method of long-wave infrared Fourier spectrometer at various piecewise", Proc. SPIE 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology, 1255726 (23 January 2023); https://doi.org/10.1117/12.2651980

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available