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Proceedings Paper

Spectrum modeling of mid-infrared flare considering realistic measurement environment (Conference Presentation)
Author(s): Kiwook Han; Wondong Lee; Jae W. Hahn

Paper Abstract

Evaluating the performance of infrared (IR) flare as an active countermeasure, the similarity between an actual signal of flare and emission of an aircraft exhaust plume is important. In order to predict the actual signal of flame, exact knowledge of theoretical modeling of the flare spectrum considering realistic measurement environment is required. In this study, we conduct a line-by-line modeling of IR flare. We calculate the spectral line parameters of IR flare using high-temperature molecular spectroscopic database (HITEMP) and chemical parameters using ICT thermodynamic code in thermodynamic equilibrium condition. We consider a collisional broadening of the spectral lines under atmospheric pressure, and instrument function of spectrometer. Also, we apply an atmospheric transmission with varying altitudes, measurement angles, and humidity based on moderate resolution atmospheric transmission database (MODTRAN). Finally, we verify our modeling of IR flare by comparing with experimental results. The normalized RMS deviation between the measured and modeled data is calculated to be about 6.7%. Acknowledgement: This work was supported by the Low Observable Technology Research Center program of Agency for Defense Development (ADD).

Paper Details

Date Published: 19 September 2017
Proc. SPIE 10403, Infrared Remote Sensing and Instrumentation XXV, 104030N (19 September 2017); doi: 10.1117/12.2273542
Show Author Affiliations
Kiwook Han, Yonsei Univ. (Korea, Republic of)
Wondong Lee, Korea Military Academy (Korea, Republic of)
Yonsei Univ. (Korea, Republic of)
Jae W. Hahn, Yonsei Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 10403:
Infrared Remote Sensing and Instrumentation XXV
Marija Strojnik; Maureen S. Kirk, Editor(s)

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