中文摘要：

激光在大气中传输要考虑大气折射的影响。文中给出了光学频率范围内,对流层中地球大气的空气折射率模型,并给出近似计算横向误差的公式。利用MATLAB计算出在大气层60km处、不同波长的情况下,激光偏转角和横向误差随初始仰角的变化关系,认为激光的偏转主要依赖于初始仰角而不是激光的波长。

英文摘要：

When laser is transmitted in the atmosphere, we should first consider the influence of atmospheric refraction on laser transmission. This paper gives the refraction rate model of air in the troposphere of the earth within optical fre- quency range. In the atmosphere at 60kin high and under different wavelengths, the connection of laser deflection angle and lateral error changing with the initial elevation is computed with MATLAB. The deflection of the laser beam is mainly dependent on the initial elevation angle instead of the laser wavelength.