电波科学学报2012，Vol.27Issue(3)：564-571,8.
激光大气传输特性及其回波信号仿真研究
Simulation research on the atmospheric transmission characteristics and the return signal for laser
摘要
Abstract
Based on the theory of Rayleigh scattering and Mie scattering,the scattering,extinction,transmission and other laser atmospheric transmission characteristics at 355 nm,2 μm,10 μm are simulated and compared by using the existing moderate spectral resolution atmospheric transmittance model（MODTRAN） and reference model atmosphere（RMA） data.At the same time,the return signals of spectral distribution for Rayleigh and Mie at 355 nm are analyzed,and its spectrum at different heights is simulated by using Gaussian function.The results show that compared to 2 μm,10 μm,the atmospheric scattering characteristics of 355 nm is the best,and the 355 nm laser reduces severely when transmitting in the atmosphere,so it applies to the clear sky,and the low layer is mainly Mie signal,and the high layer is mainly Rayleigh signal for the Doppler wind lidar at that wavelength,and considering various factors,355 nm is chosen as the operating wavelength of the spaceborne Doppler wind lidar.关键词
多普勒测风激光雷达/MODTRAN/RMA/散射/消光/透射率Key words
Doppler wind lidar/MODTRAN/RMA/scattering/extinction/transmission分类
天文与地球科学引用本文复制引用
严卫,张日伟,代登坡,江乐飞..激光大气传输特性及其回波信号仿真研究[J].电波科学学报,2012,27(3):564-571,8.基金项目
国家自然科学基金资助项目 （）
