为了实时测量多个波段激光大气透过率, 研制了ISP02型近红外太阳辐射计。详细阐述了该仪器的硬件组成、光学系统设计以及工作流程, 并对仪器进行了定标, 给出仪器能达到的性能指标。依据建立的基于太阳宽谱直接辐射测量获取激光波段大气透过率的方法, 实测得到1.064, 1.315, 1.54 μm大气透过率, 将结果与POM02型太阳辐射计采用外推法获取的激光大气透过率进行对比, 误差均小于6%, 测量的水汽总量与POM02对比, 误差均小于7%; 然后, 将两者外推的3.78 μm透过率进行对比, 误差均小于5%。秋冬季实测的1.315 μm透过率与激光大气传输评估软件对比, 误差小于2%。该仪器测量结果可靠、性能稳定, 可为同时获取多个波段激光大气透过率提供有效测量手段。

To measure multi-waveband laser atmospheric transmittance, a novel ISP02-style infrared solar radiometer was developed. The hardware composition, optical system design, and workflow of the equipment were described in detail. The equipment was calibrated and the performance indicators achieved by the equipment were given. Atmospheric transmittances of 1.064, 1.315, and 1.54 m were measured using the established method based on direct solar radiation measurements. The actual results and comparison experiments show that the errors are less than 6% compared with the POM02 solar radiometer whose results are obtained by an extrapolation method. The total water vapor measured is less than 7% compared with the POM02. Compared to the extrapolated 3.78 m transmittance, the error is less than 5%. The 1.315 m transmittance is less than 2% compared to that of laser atmospheric transmission assessment software in autumn and winter. The results of the equipment are reliable and stable, providing an effective means to obtain multi-waveband laser atmospheric transmittance at the same time.李建玉|lijianyu@aiofm.ac.cn