介绍一种多波段偏振成像仪的集成设计及实验室偏振定标方案。通过可调偏振度光源验 证仪器偏振定标精度,在10°视场内,当光源偏振度低于0.6时,仪器490 nm通道 偏振度测量相对误差优于1.6%, 670 nm通道偏振度测量相对误差优于1.7%。设计了多波 段偏振成像仪的系统软件,详细介绍了各个功能模块及自动化观测算法,通过敦煌辐射校正场 外场试验,验证了仪器野外运行的稳定性以及系统软件设计的合理性与实用性。

The integrated design and laboratory calibration method of a multi-band polarization imager were presented. The polarization calibration accuracy was validated by a polarized light source whose degrees of polarization (DOP) is adjustable. The results showed that the relative DOP errors of 490 nm and 670 nm band are less than 1.6% and 1.7%, respectively, when the DOP of the polarized light source is less than 0.6. The software system of the multi-band polarization imager was designed as well, and the function modules and automatic observation algorithm of the software were described in detail. Finally, the field operation stability of the instrument as well as the function and practicability of software design were verified by its field depolyment in Dunhuang radiation calibration site, Gansu, China.