介绍了一种新的CO2探空测量方法。其原理是利用比尔-歩格-朗伯定律,使用非分光红外法,通过选择合适的红外光源和红外探测器,设计了合理的电路,在定标的基础上将测量的光强转换成CO2浓度,制作出可用于探空测量的实验装置。通过与EC9820型CO2分析仪的地面对比实验,结果表明,连续24h测量的误差范围在-10×10-6～10×10-6,平均误差为3.76×10-6,验证了设计的可行性,基本满足了大气CO2探空的精度需求,为进一步研制CO2探空仪提供了参考。 A new CO2 sounding method is introduced. The principle is to use Bill-Schubert-Lambert law, using non-spectroscopic infrared method, by selecting the appropriate infrared light source and infrared detector, designed a reasonable circuit, based on the calibration of the measured light intensity is converted to CO2 Concentration, to create a test device that can be used for sounding measurements. Comparing with the ground test of EC9820 CO2 analyzer, the results show that the error range of continuous 24h measurement is -10 × 10-6 ~ 10 × 10-6 with the average error of 3.76 × 10-6, which verifies the feasibility of the design , Basically meeting the accuracy requirement of atmospheric CO2 sounding, which provides a reference for further research on CO2 sounding instrument.