项目来源
国家重点研发计划(NKRD)
项目主持人
刘东
项目受资助机构
浙江大学
项目编号
2016YFC0200704
立项年度
2016
立项时间
未公开
项目级别
国家级
研究期限
未知 / 未知
受资助金额
101.00万元
学科
大气污染成因与控制技术研究
学科代码
未公开
基金类别
未公开
关键词
双波长激光雷达 ; 高光谱分辨率遥感 ; 干涉仪 ; 鉴频器 ; 反演 ; 气溶胶 ; Dual wavelength laser lidar ; High-spectral-resolution remote sensing ; Interferometer ; Discriminator ; Inversion ; Aerosol
参与者
刘崇；沈雪；王南朝；戎宇航
参与机构
未公开
项目标书摘要：高光谱分辨率激光雷达(HSRL)在观测与研究大气气溶胶方面有一定优势。但由于受到光谱鉴频器的限制，目前的HSRL只能探测得到大气气溶胶在紫外(如355 nm)和可见光波段(如532 nm)的光学参数，而在较长的近红外(如1064 nm)波段却未见报道。由于紫外和可见光在波长上比较接近，得到的气溶胶参数在大气气溶胶类型识别时信息量不足。本课题构建了基于视场展宽迈克尔逊干涉仪(FWMI)鉴频器的近红外HSRL以探测大气气溶胶在近红外波段的光学属性；同时利用碘分子鉴频技术研制532nm可见光波段的HSRL,从而实现近红外—可见双波长高光谱分辨率激光雷达系统。研制的双波长HSRL系统，经过系统参数定标，能实现准连续数据观测。该系统能高时空分辨率地精确探测大气气溶胶后向散射系数、消光系数、退偏比、光学厚度、谱退偏比、散射颜色比等综合光学参数，形成全方位的气溶胶“指纹”。并且实施了外场实验，实现多种气溶胶的观察，建立了双波段 HSRL 气溶胶光学属性实验数据库。
Application Abstract: High-spectral-resolution Lidar(HSRL)has certain advantages in the observation and study of atmospheric aerosols.However,due to the limitations of the spectral discriminator,the current HSRL can only detect the optical parameters of atmospheric aerosols in the ultraviolet band(such as 355 nm)and visible band(such as 532 nm),but it has not been reported in the long near infrared band(such as 532 nm).Since the ultraviolet and visible light are relatively close in wavelength,the obtained aerosol parameters are insufficient in the amount of information recognized by the atmospheric aerosol type.This subject constructs a near-infrared HSRL based on field-widened Michelson interferometer discriminator to detect the optical properties of atmospheric aerosols in the near-infrared band.Simultaneously using the iodine molecular frequency discrimination technology to develop the HSRL in the visible light band of 532nm,thereby realizing the near-infrared-visible dual-wavelength HSRL system.The dual-wavelength HSRL system developed can achieve quasi-continuous data observation after system parameter calibration.The system can accurately detect atmospheric aerosol backscattering coefficient,extinction coefficient,depolarization ratio,optical depth,spectral depolarization ratio,scattering color ratio and other comprehensive optical parameters with high spatial and temporal resolution to form a full range of aerosol"fingerprints".Furthermore,an external field experiment was carried out to observe various aerosol.A dual-band HSRL aerosol optical property experimental database was established.
项目受资助省
浙江省
