通过实验验证与理论分析,探讨了曲面特征的红外辐射测温特性.研究结果表明:曲面红外辐射测温在本质上与平面辐射测温相同,满足同一数学表达式;出现曲面红外测温失真的根本原因是被测表面等效面出现了不满足表面漫射条件假设的状况,这主要是由被测表面法向与测量方向夹角过大导致的;通过测量当地表面发射率可以校正因等效面不满足漫射条件假设造成的红外测温结果失真. Through the experimental verification and theoretical analysis, the characteristic of infrared radiation temperature measurement of curved surface is discussed. The results show that: the surface infrared radiation temperature measurement is essentially the same with the plane radiation temperature measurement, which satisfies the same mathematical expression; The fundamental reason is that the measured surface equivalent surface does not satisfy the assumption of surface diffusion conditions, which is mainly caused by the angle between the measured surface normal and the measurement direction is too large; by measuring the local surface emissivity can be corrected due to The surface does not satisfy the diffuse condition assumption caused by the infrared temperature measurement distortion.