为了提高激光红外传输在工程应用方面的精度，以辐射传输理论为基础，考虑大气湿度、温度、能见度等容易测量的因素，建立了大气透过率衰减的简化模型。利用模型，对不同波长的激光在各种大气环境及传输路径下的透过率进行了计算，并与商用软件的计算结果进行对比。实验结果表明：简化模型减小了运算量；晴朗大气，简化模型与软件计算结果在特定波段比较接近，最小相对误差低至0.005%。%In order to improve the precision of laser infrared transmission in engineering applications, the integrative theoretic model for the transmittance attenuation model was established based on the infrared radiation transmission theory,and various easily measured factors considered, such as the air humidity, temperature and visibility. In the simplified model, the transmittance of laser, which has different wavelengths, was calculated in a variety of atmospheric and transmission paths, then compared with the results of commercial software. The experimental results show that the model can reduce the amount of computation. In the clear air, the calculations of simplified model are close to the software in a particular waveband, and the minimum relative error is as low as 0.005%.
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