Radiation characterization analysis of pushbroom longwave infrared imaging spectrometer

Rongbao Shi; Yuheng Chen; Jiankang Zhou; Weiming Shen

doi:10.1117/12.2037442

31 December 2013 Radiation characterization analysis of pushbroom longwave infrared imaging spectrometer

Rongbao Shi, Yuheng Chen, Jiankang Zhou, Weiming Shen

Proceedings Volume 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 904217 (2013) https://doi.org/10.1117/12.2037442
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

Noise equivalent temperature difference (NETD) is the key parameter characterizing the detectivity of infrared systems. Our developed pushbroom longwave infrared imaging spectrometer works in a waveband between 8μm to 10.5 μm. Its temperature sensitivity property is not only affected by atmosphere attenuation, transmittance of the optical system and the characteristics of electric circuit, but also restricted by the self-radiation. The NETD accurate calculation formula is derived according to its definition. Radiation analysis model of a pushbroom image spectrometer is set up, and its self-radiation is analyzed and calculated at different temperatures, such as 300K, 150K and 120K. Based on the obtained accurate formula, the relationships between the NETD of imaging spectrometer and atmospheric attenuation, F-number, effective pixel area of detector, equivalent noise bandwidth and CCD detectivity are analyzed in detail, and self-radiation is particularly discussed. The work we have done is to provide the basis for parameters determination in spectrometer system.

Citation Download Citation

Rongbao Shi, Yuheng Chen, Jiankang Zhou, and Weiming Shen "Radiation characterization analysis of pushbroom longwave infrared imaging spectrometer", Proc. SPIE 9042, 2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 904217 (31 December 2013); https://doi.org/10.1117/12.2037442

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