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将月球作为热发射波段定标参考源,在无需月表发射率和温度信息条件下,通过引入UDER参数,建立了不同热发射波段观测辐亮度间定量关系,并导出了新的波段间交叉定标方法.同时,利用FY-2E卫星多波段月球观测结果,以辐射精度较高的热红外波段为基准,在无星载全光路黑体情况下,初步实现了水汽波段在轨高精度辐射定标,且在200～220 K低温区间内的定标精度平均提高约3.5 K,并显著改善了云分类等定量产品的性能.
Using the moon as the reference source for the calibration of the thermal emission band, a quantitative relationship between the observed radiances of different thermal emission bands was established by introducing the UDER parameter without the emissivity and temperature information on the lunar surface. A new crossover constant In the meantime, based on the FY-2E satellite multi-band lunar observations and the high-accuracy thermal infrared band as the reference, the on-orbit in-orbit high-precision radiation calibration , And the calibration accuracy in the low temperature range of 200 ~ 220 K was improved by about 3.5 K on average, and the performance of quantitative products such as cloud classification was significantly improved.