针对多方位/多波段临边紫外成像仪的结构特点及辐射定标的难点，提出了一种分割仪器视场定标再整合定标数据的方式。通过比较仪器全视场与分割视场照明条件下探测器相同像素点输出值的大小，得出各视场之间的相互影响量基本在仪器自身的测量重复性误差1%之内，从而证明了分割视场定标方式的可行性。对临边紫外成像仪分割视场定标结果显示，紫外290、310、355 nm三个波段的合成标准不确定度分别为3.93%、3.90%、3.84%，符合目前遥感仪器紫外波段辐射定标不确定度3%~5%的范围。临边紫外成像仪分割视场定标方式的成功实施为解决超大视场以及更加复杂的遥感仪器辐射定标提供了新的指导。

Considering the design feature and the difficulty in radiation calibration of the multi-azimuth/multi-waveband earth limb ultraviolet (UV) imager, a method which firstly calibrated the segmented field and then integrated the data has been proposed. With a radiated comparison between the whole field and the segmented field, the output of detector shows a consistence within 1% measurement reproducibility error of the instrument, which returns back to prove the calibration method feasibility. The combined standard uncertainty of the three 290 nm, 310 nm and 355 nm UV bands is 3.93%, 3.90% and 3.84% respectively, which conforms the 3%~5% range of radiation calibration uncertainty of the UV sensors presently. With the successful accomplishment of the segmented field method for the limb UV imager, radiation calibration for greater field or more complicated sensors has been made available.