激光在大气传输中的到达角误差修正方法研究

The Arriving Angle Error Correction Method of the Laser Transmitting in Atmosphere

无线光通信被认为是解决地空通信高码率"瓶颈"问题的唯一途径.由于大气介质的不均匀性,导致大气折射率不再是常数,使得激光在大气中传播时产生折射效应,最终使激光束到达角产生误差,影响系统的通信性能.给出光源出射角(或到达角)的折射误差修正方法,通过仿真计算证实,随着出射角的减小,到达角误差逐渐增大.

The wireless optical communications is considered only way of solving bottle-neck problem in the high rate code. But owing to asymmetry of atmospheric medium in system of airterra optical communications, atmospheric refractive index isn＇t a constant, then light-wave propagation brings refractive-effect in atmosphere, finally influences systemic communication capability because of arriving angle error when beam of light reaches satellite. The article advances refraction error correction method of lamp-house effluence angle （arrived angle）, passing emulation calculate,and proves arrived angle error augment gradually along with effluence angle lessening.