Research on the calculation of pollution source concentration distribution in industrial parks based on passive FTIR

Zhixiong Yang; Jie Feng; Chunchao Yu; Jiangkun Zhang

doi:10.1117/12.3023359

18 March 2024 Research on the calculation of pollution source concentration distribution in industrial parks based on passive FTIR

Zhixiong Yang, Jie Feng, Chunchao Yu, Jiangkun Zhang

Author Affiliations +

Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 1310438 (2024) https://doi.org/10.1117/12.3023359
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China

Abstract

Infrared hyperspectral imaging passive telemetry system is applied to chemical gas monitoring. Noise equivalent radiation brightness (NESR) is an important index to characterize the sensitivity of the system. Firstly, the theory of Noise Equivalent Spectral Radiance (NESR) of passive infrared telemetry system is introduced. Based on infrared radiation transmission theory and simple three-layer model, the noise equivalent radiation brightness (NESR) of infrared hyperspectral imaging system under area array detector is deduced. Three calculation methods of NESR are introduced. The principle experimental device of long-wave infrared hyperspectral imaging spectrometer (CHIPED-1) developed by ourselves is used to validate the method. The NESR distribution at 10μm is obtained by calculating the measured data, which is helpful to the photoelectric sensitivity study of infrared hyperspectral imaging system under area array detection.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhixiong Yang, Jie Feng, Chunchao Yu, and Jiangkun Zhang "Research on the calculation of pollution source concentration distribution in industrial parks based on passive FTIR", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 1310438 (18 March 2024); https://doi.org/10.1117/12.3023359

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