多波长激光的大气消光系数相关性及实时反演计算研究

CORRELATIVITY OF ATMOSPHERIC EXTINCTION COEFFICIENT AND REAL-TIME INVERSION COMPUTATION FOR MULTI-WAVELENGTH LASER

利用Mie散射理论并结合激光多点断层测量技术,得到了不同波长消光系数之间的相关关系.使用自主研制的激光遥感式后向散射能见度测量仪,利用实测数据得到了波长为1.06μm激光的大气消光系数,进而利用不同波长消光系数间的相关关系实时反演计算了波长为0.532μm、0.86μm、1.57μm和3.47μm激光的大气消光系数,并与实测波长为0.532μm的大气消光系数进行了比对,结果表明可以使用大气消光系数相关性实时反演计算红外辐射大气传输并建立红外辐射实时大气传输修正模型.

The correlativity of extinction coefficients at different wavelengths was obtained by Mie scattering theory and the laser multipoint fault measuring techniques. The atmospheric extinction coefficient at the wavelength of 1. 06μm was measured with the laser remote sensing back scattering hazemeter made by ourselves. Then the extinction coefficients at the wavelengths of 0.532 μm, 0.86 μm, 1.57 μm and 3.47μm were inversely calculated real-timely with the correlativity of extinction coefficients at different wavelengths. They were compared with the measured extinction coefficient at the wavelength of 0. 532μm. The results show that it is feasible to inversely calculate the infrared radiation atmospheric transmission and establish the infrared radiation real-time atmospheric transmission correcting model with the correlativity of extinction coefficients at different wavelengths.