Radiometric calibration method of MWIR spectrometer coded by Hadamard transform

Tao Sun; HuiMin Cai; Yan Zhou

doi:10.1117/12.2585690

12 March 2021 Radiometric calibration method of MWIR spectrometer coded by Hadamard transform

Tao Sun, HuiMin Cai, Yan Zhou

Proceedings Volume 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications; 117630D (2021) https://doi.org/10.1117/12.2585690
Event: Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, 2020, Kunming, China

Abstract

Due to the poor manufacturing process of MWIR diffraction grating, there are obvious non working level diffraction images in MWIR imaging spectrometer which uses Hadamard Transform to realize the snapshot staring imaging. When non working level and working level diffraction images overlap in space, it becomes impossible to extract the MWIR spectrum information of targets. To solve this problem, an absolute radiation calibration method based on Hadamard Transform is proposed. The blackbody and collimator are used as input to code, calibrate and decode the target spectrum information. Then, the MWIR spectrum curve of targets can be obtained after decoding. Compared with the theoretical spectrum curve of the target, the relative error is less than 1%. The influence of diffraction image aliasing on the system is eliminated, which proves the feasibility of this method.

Citation Download Citation

Tao Sun, HuiMin Cai, and Yan Zhou "Radiometric calibration method of MWIR spectrometer coded by Hadamard transform", Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 117630D (12 March 2021); https://doi.org/10.1117/12.2585690

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