-
measurement methods based on Rayleigh scattering are employed to relatively detect atmospheric temperature profiles. That is to say, the definition of response functions and calibration procedures is required for temperature retrieval. Because the thermal motion rate of gas molecule complies with Maxwell distribution, and gas molecule is always in motion state, the frequency of scattering return signal generates Doppler spectral broadening. There is a positive correlation between the full width at half maximum of widened Doppler spectrum and T1/2, atmospheric absolute temperature can be obtained by measuring the Doppler spectrum shape. In this paper, the fine detection method of the spectrum shape of Rayleigh scattering and residuary Mie-scattering correction method based on solid cavity scanning Fabry-Perot (F-P) interferometer are investigated. According to the characteristics of Rayleigh scattering spectrum, the free spectral range, the geometric length of solid cavity, the type of cavity media, the full width at half maximum, the reflectivity of cavity, and the scanning step are designed. When the electro-optical crystal of KD*P with the length of 8.5 mm acts as solid cavity medium of scanning F-P interferometer, the designed free spectral region and 3 dB bandwidth are 11.5 GHz and 60 MHz at the central wavelength of 354.7 nm, respectively. The energy datum of 185 discrete points at Rayleigh scattering spectrum are obtained by using an optimized solid cavity scanning F-P interferometer with the scanning voltage of 23.5 V. A fitting spectrum is generated by employing polynomial interpolation method at the atmospheric temperature of 300 K. The maximum absolute error and full width at half maximum error of Rayleigh scattering spectrum are 22 MHz and 337 kHz, respectively. In order to verify the results, a numerical simulation of Rayleigh scattering spectrum based on standard atmosphere model and S6 model is performed. The detection uncertainty of atmospheric temperature is up to 0.8 K. As SNR (signal to noise ratio) is 10, the detection distance is 4.5 and 7.9 km at day-time and night-time, respectively. The research provides a new solution of filter system for the achievement of all-time, high-precision, and absolute detection of atmospheric temperature in the future. In meteorology, in order to investigate the temporal and spatial characteristics, the change rules and physical mechanism of weather processes, the temperature in the boundary layer of urban atmosphere is absolutely detected, where human activities are frequent and the changes of weather elements are obviously at day and night. In addition, the absolute detection method of atmospheric temperature can provide the valid means to research urban heat island, weather forecast for urban environment, and high temperature alert. In environmental studies, the absolute detection of atmospheric temperature can provide the big amount of scientific data for establishment of numerical model and research on air pollution diffusion. There is reference significance for the investigation of filter system of similar lidar. Simultaneously, the scanning filter method provides a feasible solution for the filter system with the characteristics of miniaturization, high anti-interference and high stability in the space-based platform.
-
Keywords:
- atmospheric temperature /
- Rayleigh scattering spectrum /
- hyperspectral lidar /
- solid cavity scanning Fabry-Perot interferometer
[1] Li Y J, Song S L, Li F Q, Cheng X W, Chen Z W, Liu L M, Yang Y, Gong S S 2015 Chin. J. Geophys. 7 2294 (in Chinese) [李亚娟, 宋沙磊, 李发泉, 程学武, 陈振威, 刘林美, 杨勇, 龚顺生 2015 地球 7 2294]
[2] Gong X, Hua D X, Li S C, Wang J, Shi X J 2016 Acta Phys. Sin. 65 073601 (in Chinese) [巩鑫, 华灯鑫, 李仕春, 王骏, 石晓菁 2016 65 073601]
[3] Wang H W, Hua D X, Wang Y F, Gao P, Zhao H 2013 Acta Phys. Sin. 62 120701 (in Chinese) [王红伟, 华灯鑫, 王玉峰, 高朋, 赵虎 2013 62 120701]
[4] Liu J, Hua D X, Li Y 2007 Acta Opt. Sin. 27 755 (in Chinese) [刘君, 华灯鑫, 李言 2007 光学学报 27 755]
[5] Nobuki K, Akihito H, Shumpei K 2012 Laser Radar Technology and Applications XVII Baltimore, Maryland, USA, May 1-3, 2012 p8379
[6] Fiocco G, Beneditti M G, Maschberger K, Madonna E 1971 Nature Phys. Sci. 229 78
[7] Guo J J, Yan S A, Wu S H, Song X Q, Liu Z S 2008 J. Optoe. Laser 19 66 (in Chinese) [郭金家, 闫召爱, 吴松华, 宋小全, 刘智深 2008 光电子激光 19 66]
[8] Shimizu H, Lee S A, She C Y 1983 Appl. Opt. 22 1373
[9] Alvarez R J, Caldwell L M, Li Y H, Krueger D A, She C Y 1990 J. Atmos. Ocean. Technol. 7 876
[10] Hua D X, Uchida M, Kobayashi T 2005 Appl. Opt. 44 1315
[11] Graul J, Lilly T 2014 Opt. Express 22 20117
[12] Gu Z Y, Witschas B, Water W V D, Ubachs W 2013 Appl. Opt. 52 4640
[13] Ma Y, Fan F, Liang K, Li H, Yu Y, Zhou B 2012 J. Opt. 14 095703
[14] Gerakis A, Shneider M N, Barker P F 2011 Opt. Express 19 24046
[15] Li C S 2014 Acta Phys. Sin. 63 074207 (in Chinese) [李长胜 2014 63 074207]
[16] Witschas B, Gu Z Y, Ubachs W 2014 Opt. Express 22 29655
[17] Kischkata J, Petersb S, Semtsiva M P, Wegnera T, Elagina M, Monastyrskyia G, Floresa Y, Kurlova S, Masselink W T 2014 Infrared Phys. Techn. 67 432
[18] Alvarez R J, Caldwell L M, Li Y H, Krueger D A, She C Y 1990 J. Atmos. Ocean. Technol. 7 876
[19] Zhong D Z, She W L 2012 Acta Phys. Sin. 61 064214 (in Chinese) [钟东洲, 佘卫龙 2012 61 064214]
[20] Wang Q M, Zhang Y M 2006 Meteorol. Sci. Technol. 34 246 (in Chinese) [王青梅, 张以谟 2006 气象科技 34 246]
-
[1] Li Y J, Song S L, Li F Q, Cheng X W, Chen Z W, Liu L M, Yang Y, Gong S S 2015 Chin. J. Geophys. 7 2294 (in Chinese) [李亚娟, 宋沙磊, 李发泉, 程学武, 陈振威, 刘林美, 杨勇, 龚顺生 2015 地球 7 2294]
[2] Gong X, Hua D X, Li S C, Wang J, Shi X J 2016 Acta Phys. Sin. 65 073601 (in Chinese) [巩鑫, 华灯鑫, 李仕春, 王骏, 石晓菁 2016 65 073601]
[3] Wang H W, Hua D X, Wang Y F, Gao P, Zhao H 2013 Acta Phys. Sin. 62 120701 (in Chinese) [王红伟, 华灯鑫, 王玉峰, 高朋, 赵虎 2013 62 120701]
[4] Liu J, Hua D X, Li Y 2007 Acta Opt. Sin. 27 755 (in Chinese) [刘君, 华灯鑫, 李言 2007 光学学报 27 755]
[5] Nobuki K, Akihito H, Shumpei K 2012 Laser Radar Technology and Applications XVII Baltimore, Maryland, USA, May 1-3, 2012 p8379
[6] Fiocco G, Beneditti M G, Maschberger K, Madonna E 1971 Nature Phys. Sci. 229 78
[7] Guo J J, Yan S A, Wu S H, Song X Q, Liu Z S 2008 J. Optoe. Laser 19 66 (in Chinese) [郭金家, 闫召爱, 吴松华, 宋小全, 刘智深 2008 光电子激光 19 66]
[8] Shimizu H, Lee S A, She C Y 1983 Appl. Opt. 22 1373
[9] Alvarez R J, Caldwell L M, Li Y H, Krueger D A, She C Y 1990 J. Atmos. Ocean. Technol. 7 876
[10] Hua D X, Uchida M, Kobayashi T 2005 Appl. Opt. 44 1315
[11] Graul J, Lilly T 2014 Opt. Express 22 20117
[12] Gu Z Y, Witschas B, Water W V D, Ubachs W 2013 Appl. Opt. 52 4640
[13] Ma Y, Fan F, Liang K, Li H, Yu Y, Zhou B 2012 J. Opt. 14 095703
[14] Gerakis A, Shneider M N, Barker P F 2011 Opt. Express 19 24046
[15] Li C S 2014 Acta Phys. Sin. 63 074207 (in Chinese) [李长胜 2014 63 074207]
[16] Witschas B, Gu Z Y, Ubachs W 2014 Opt. Express 22 29655
[17] Kischkata J, Petersb S, Semtsiva M P, Wegnera T, Elagina M, Monastyrskyia G, Floresa Y, Kurlova S, Masselink W T 2014 Infrared Phys. Techn. 67 432
[18] Alvarez R J, Caldwell L M, Li Y H, Krueger D A, She C Y 1990 J. Atmos. Ocean. Technol. 7 876
[19] Zhong D Z, She W L 2012 Acta Phys. Sin. 61 064214 (in Chinese) [钟东洲, 佘卫龙 2012 61 064214]
[20] Wang Q M, Zhang Y M 2006 Meteorol. Sci. Technol. 34 246 (in Chinese) [王青梅, 张以谟 2006 气象科技 34 246]
Catalog
Metrics
- Abstract views: 5875
- PDF Downloads: 198
- Cited By: 0
下载:
