Ultraviolet Raman lidar for high-accuracy profiling of aerosol extinction coefficient  

作　　者：高飞 宋小全 王玉峰 周毅 华灯鑫 

机构地区：[1]School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology [2]Ocean Remote Sensing Institute, Ocean University of China [3]School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology

出　　处：《Chinese Optics Letters》2009年第2期95-97,共3页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 40675015);the Key Project of Ministry of Education of China (No. 207117);the Nature Science Foundation of Shaanxi Province Education Department (No. 07JK336)

摘　　要：An ultraviolet （UV） Raman lidar system at 354.7 nm has been developed for accurately measuring the aerosol extinction profiles. A spectroscopic filter combining a high-spectral-resolution grating with two narrowband mirrors is used to separate the vibrational Raman scattering signal of N2 at a central wavelength of 386.7 nm and the elastic scattering signal at 354.7 nm. The aerosol extinction is derived from the Raman scattering of N2 and the elastic scattering by the use of Raman method and Klett method, respectively. The derived results of aerosol extinction are used to compare the difference of two retrieval methods, and the preliminary experiment shows that the Raman lidar system operated in analog detection mode has the capability of measuring aerosol profiles up to a height of 3 km with a laser energy of 250 mJ and an integration time of 8 min.An ultraviolet （UV） Raman lidar system at 354.7 nm has been developed for accurately measuring the aerosol extinction profiles. A spectroscopic filter combining a high-spectral-resolution grating with two narrowband mirrors is used to separate the vibrational Raman scattering signal of N2 at a central wavelength of 386.7 nm and the elastic scattering signal at 354.7 nm. The aerosol extinction is derived from the Raman scattering of N2 and the elastic scattering by the use of Raman method and Klett method, respectively. The derived results of aerosol extinction are used to compare the difference of two retrieval methods, and the preliminary experiment shows that the Raman lidar system operated in analog detection mode has the capability of measuring aerosol profiles up to a height of 3 km with a laser energy of 250 mJ and an integration time of 8 min.

关 键 词：Elastic scattering Light extinction Optical radar Raman scattering 

分 类 号：TN958.98[电子电信—信号与信息处理]