测量近中红外激光大气透过率的调制型太阳光度计

为弥补常用红外波段激光大气透过率测量方法成本高或实时性低的不足,通过模拟计算分析研究,提出基于光源调制太阳光度计技术提取红外波段激光大气透过率的方法,提供一种成本低、操作简单、实时性强的有效测量方法。研制的光源调制型红外太阳光度计可测量宽波段大气透过率,再依据建立的宽带和窄带透过率关系进行修正,最终获取可应用的近中红外多波段激光大气透过率。实际测量结果与对比实验表明,与实验室自研的近红外太阳光度计相比统计误差小于4%,与POM-02相比统计误差小于6%。红外调制型太阳光度计获取的实时结果不但可应用于激光大气传输修正中,也对评估激光通信和激光传输等具有重要意义。

Measurement of near mid infrared laser atmospheric transmittance using sunlight modulation sun photometer

The infrared laser atmospheric transmittance measurement methods have the problems of high cost and low real time performance. To address these problems, a method making use of the measurements of sunlight modulation sun photometer to obtain the atmospheric transmittance of infrared laser is proposed. It is mainly based on measurements and research of analysis on analogy calculation. This method has the advantages of low cost, simple operation, and real time performance. The infrared sunlight modulation sun photometer can measure the atmospheric transmittance in wide band. Then, the relationship between the broadband transmittance and the narrowband transmittance can be revised. Finally, the applicable near mid infrared multi band laser atmospheric transmittance can be obtained. The actual measurement results and comparison experiments are carried out. Compared with the near infrared sun photometer developed by the laboratory, experimental results show that the statistical error is less than 4%. Compared with POM 02, the statistical error is less than 6%. The real time results obtained by infrared sunlight modulation sun photometer can be used not only in the correction of laser atmospheric transmission, but also in the evaluation of laser communication and laser transmission.