用940nm通道遥感水汽总量的可行性试验

FEASIBILITY EXPERIMENTS ON SOUNDING WATER VAPOR AMOUNT WITH 940 nm SPECTRAL BAND

在 940nm水汽弱吸收带和其附近窗区选取若干探测通道 ,采取不同通道组合 ,模拟计算通道反射率比值 ,并建立了该比值与水汽含量之间的统计关系。用探空观测独立样本检验水汽含量模拟计算结果 ,相对误差小于 6 %。

The water vapor amount is simulated through its statistical relation to the ratios of reflectance in several channels, which are selected and grouped from the 940 nm weak water vapor absorption band and the vicinal window region. The simulation results of water vapor amount have an average relative error of 6% by compared with the independent radiosonde observation.