| Passive Remote Chemical Detection of SF6 Clouds in the Atmosphere by FTIR |
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Eugene Chong, Byeonghwang Park, Ju Hyun Kim |
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The 5th Research and Development Institute, Agency for Defense Development |
| 수동형 FTIR 원격화학 탐지기를 이용한 SF6 오염운의 실시간 탐지 |
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정유진, 박병황, 김주현 |
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국방과학연구소 제5기술연구본부 |
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| Abstract |
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Brightness temperature spectra acquired from FTIR(Fourier Transform Infrared)-SCADS (Standoff Chemical Agent Detection System) could be available for detection and identification of the chemical agents and pollutants from different background. IR spectrum range of 770 to 1350 $cm^{-1}$ is corresponding to "atmospheric window". A 2-dimensional(2D) brightness temperature spectrum was drawn from combining each data point through automatic continuous scanning of FTIR along with altitude and azimuth. At higher altitude, temperature of background was decreased but scattering effect of atmospheric gases was increased. Increase in temperature difference between background and blackbody in SCADS at higher temperature causes to increases in peak intensity of $SF_6$. This approach shows us a possibility that 2D visual information is acquired from scanning data with a single FTIR-SCADS. |
| Key Words:
Passive, Sulfur Hexafluoride, Fourier Transform Infrared, Standoff Chemical Agent Detection System, Altitude, Azimuth, Simulant |
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