激光传输大气参量测量精度要求的数值分析
Effect of the measurement errors of atmospheric parameters on the laser propagation effects
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摘要: 就激光大气传输湍流热晕相互作用下大气参量测量误差对激光传输效果（平均功率密度）的影响进行了数值分析，并以典型的激光传输条件为例，分析了对激光大气传输影响最为敏感的3个大气参量——风速、吸收系数以及湍流结构常数的测量精度要求。综合不同传输距离下大气参量测量误差对传输效果的影响，大气风速的测量精度要求为±10%，吸收系数及湍流结构常数的测量精度要求分别为±5%和±15%。Abstract: Effect of the measurement errors of atmospheric parameters on the laser propagation effects(the average power density) was numerically analyzed. Based upon the characteristic laser propagation conditions, the demand of measurement precision of atmospheric parameters was obtained. The measurement errors of atmospheric wind velocity, absorption coefficient and the refractive index structure constant have relatively distinct effects on the laser propagation effects. Numerical analysis shows that the demands of measurement precision of these three atmospheric parameters are ±10%,±5% and ±15%, respectively.
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