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Infrared passive remote sensing allows remote monitoring and early warning of air pollution. The key to the quantitative resolution is to obtain the background radiation in application process. The existing methods (such as measuring the background and atmosphere radiance spectrum in the same condition or uptake) need in advance or at the same time to measure the background spectrum without target. So, they are difficult to satisfy the demand for rapid response in the practical application. According to the infrared radiation transmission model analysis and by studying the principle of measured spectrum in the 800-1200 cm-1 band containing the target, background and environmental radiation, we propose a real-time spectrum extraction algorithm that does not require to measure the background target feature. The method is applied to the developed polluting gas scanning imaging passive FTIR system. The remote sensing of SF6 is done. Concentration data and the data obtained by the method at the same condition are compared, and the results show that the correlation coefficient squared value reaches 0.99, indicating that the method is feasible, which can effectively improve the response speed of the system and the scope of application.
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Keywords:
- Fourier transform infrared spectroscopy /
- passive remote sensing /
- real-time spectrum extraction algorithm
[1] Zander R, Roland G, Delbouille L, Sauval A, Farmer C B, Norton R H 1987 J. Atmosph. Chem. 5 395
[2] Flanigan D F 1986 Appl. Opt. 25 4253
[3] Liu X, Murcray F J, Murcray D G, Russell J M 1996 J. Geophys. Res. 101 10175
[4] Liu Z M, Liu W Q, Gao M G, Tong J J, Zhang T S, Xu L, Wei X L, Jin L, Wang Y P, Chen J 2010 Acta Phys. Sin. 59 5397 (in Chinese) [刘志明, 刘文清, 高闽光, 童晶晶, 张天舒, 徐亮, 魏秀丽, 金岭, 王亚萍, 陈军 2010 59 5397]
[5] Herget W F, Brasher J D 1980 Opt. Eng. 19 508
[6] Heland J, Schäfer K 1997 Appl. Opt. 36 4922
[7] Worden H, Beer R, Rinsland C P 1997 J. Geophys. Res. 102 1287
[8] Theriault J, Puckrin E, Lavoie H, Turcotte C S, Bouffard F, Dube D 2004 Proc. SPIE 5584 100
[9] Flanigan D F 1996 Appl. Opt. 35 6090
[10] Wayne F, Evans J, Puckrin E, McMaster D 2002 Proc. SPIE 4574 44
[11] Gao M G, Liu W Q, Zhang T S 2006 Spectrosc. Spec. Anal. 26 47 (in Chinese) [高闽光, 刘文清, 张天舒 2006 光谱学与光谱分析 26 47]
[12] Cao T T, Luo S R, Zhao X Y, Liang H M, Wang H B, Yang J G 2007 Acta Phys. Sin. 56 5554 (in Chinese)［曹婷婷, 罗时荣, 赵晓艳, 梁慧敏, 王宏波, 杨经国 2007 56 5554]
[13] Jiao Y, Xu L, Gao M G, Feng M C, Jin L, Tong J J, Li S 2012 Spectrosc. Spec. Anal. 32 1754 (in Chinese) [焦洋, 徐亮, 高闽光, 冯明春, 金岭, 童晶晶, 李胜 2012 光谱学与光谱分析 32 1754]
[14] Liu Z M, Liu W Q, Gao M G, Tong J J, Zhang T S, Xu L, Wei X L 2008 Chin. Phys. B 17 4184
[15] Feng M C, Xu L, Gao M G, Jiao Y, Li X X, Jin L, Cheng S Y, Tong J J, Wei X L, Li S 2012 Infrared Technology 34 366 (in Chinese) [冯明春, 徐亮, 高闽光, 焦洋, 李相贤, 金岭, 程巳阳, 童晶晶, 魏秀丽, 李胜 2012 红外技术 34 366]
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[1] Zander R, Roland G, Delbouille L, Sauval A, Farmer C B, Norton R H 1987 J. Atmosph. Chem. 5 395
[2] Flanigan D F 1986 Appl. Opt. 25 4253
[3] Liu X, Murcray F J, Murcray D G, Russell J M 1996 J. Geophys. Res. 101 10175
[4] Liu Z M, Liu W Q, Gao M G, Tong J J, Zhang T S, Xu L, Wei X L, Jin L, Wang Y P, Chen J 2010 Acta Phys. Sin. 59 5397 (in Chinese) [刘志明, 刘文清, 高闽光, 童晶晶, 张天舒, 徐亮, 魏秀丽, 金岭, 王亚萍, 陈军 2010 59 5397]
[5] Herget W F, Brasher J D 1980 Opt. Eng. 19 508
[6] Heland J, Schäfer K 1997 Appl. Opt. 36 4922
[7] Worden H, Beer R, Rinsland C P 1997 J. Geophys. Res. 102 1287
[8] Theriault J, Puckrin E, Lavoie H, Turcotte C S, Bouffard F, Dube D 2004 Proc. SPIE 5584 100
[9] Flanigan D F 1996 Appl. Opt. 35 6090
[10] Wayne F, Evans J, Puckrin E, McMaster D 2002 Proc. SPIE 4574 44
[11] Gao M G, Liu W Q, Zhang T S 2006 Spectrosc. Spec. Anal. 26 47 (in Chinese) [高闽光, 刘文清, 张天舒 2006 光谱学与光谱分析 26 47]
[12] Cao T T, Luo S R, Zhao X Y, Liang H M, Wang H B, Yang J G 2007 Acta Phys. Sin. 56 5554 (in Chinese)［曹婷婷, 罗时荣, 赵晓艳, 梁慧敏, 王宏波, 杨经国 2007 56 5554]
[13] Jiao Y, Xu L, Gao M G, Feng M C, Jin L, Tong J J, Li S 2012 Spectrosc. Spec. Anal. 32 1754 (in Chinese) [焦洋, 徐亮, 高闽光, 冯明春, 金岭, 童晶晶, 李胜 2012 光谱学与光谱分析 32 1754]
[14] Liu Z M, Liu W Q, Gao M G, Tong J J, Zhang T S, Xu L, Wei X L 2008 Chin. Phys. B 17 4184
[15] Feng M C, Xu L, Gao M G, Jiao Y, Li X X, Jin L, Cheng S Y, Tong J J, Wei X L, Li S 2012 Infrared Technology 34 366 (in Chinese) [冯明春, 徐亮, 高闽光, 焦洋, 李相贤, 金岭, 程巳阳, 童晶晶, 魏秀丽, 李胜 2012 红外技术 34 366]
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