多通道超广角偏振相机可以获得目标的多光谱、多角度和偏振辐射信息，是星载偏振遥感器的优秀方案。通过对采用该方案的多角度偏振成像仪光学系统的分析，指出其超广角镜头的偏振特性的不同部分(线性双向衰减和线性相位延迟)对非偏通道辐射精度和偏振通道偏振精度有不同的影响，导致两种精度要求无法同时满足。在仪器原有方案的基础上，提出综合镜头改进设计、镜头膜系设计和定标模型的方法来满足仪器精度要求。改进方案相对原方案能有效地减小超广角镜头对仪器两种精度的影响，可以为类似的多通道超广角偏振相机的精度设计提供参考。

Multichannel ultra-wide-angle polarimetric camera is a fine solution for polarimetric remote sensing by achieving multispectral, multiangle, and polarimetric information in target detection. By analyzing the optical system of Directional Polarimetric Camera, which belongs to this type, it is shown that the different aspects of the polarization properties of ultra-wide-angle lens (linear diattenuation and retardance) bring different effects on radiometric and polarimetric accuracies so that they can hardly be satisfied simultaneously. Based on the original design of Directional Polarimetric Camera, a method, which includes improved lens design, better optical coating design and modified polarimetric calibration is developed, to satisfy the accuracy specifications. After comparison between these two designs, the result shows that the improved method reduces the above so-called difference effectively. The method can work as a reference for accuracy design of other multichannel ultra-wide-angle polarimetric cameras.