偏振扫描仪偏振探测实验与结果分析

Polarization Detection Test and Result Analysis of Scanning Polarimeter

对我国自主研发的偏振扫描仪(POSP)开展了偏振探测实验,主要包括地面实验和航空校飞实验。其中,地面实验是对天空进行扫描,可获取天空的偏振度和辐亮度数据;而航空校飞实验是对地表进行扫描,可获取地表的偏振度和辐亮度数据。为了和POSP获取的偏振辐射数据进行对比分析,在实验过程中同时配置了1台三分束同时偏振相机进行偏振探测。结果表明,2台偏振仪器获得的偏振辐射数据具有较好的一致性,初步验证了POSP偏振探测实验数据的有效性,同时,实验获取的偏振辐射数据可为后期大气气溶胶参数的反演提供有效的支持。

Polarization detection tests are carried out on China′s self-developed Scanning Polarimeter(POSP),mainly including on-ground tests and in-flight tests.Among them,the on-ground tests are to scan the sky to obtain the data of polarization degree and radiation luminance of the sky,while the in-flight tests are to scan the earth′s surface to obtain the data of polarization degree and radiation luminance of the earth′s surface.In order to compare and analyze the data of polarization degree and radiation luminance obtained by POSP,a three-beam simultaneous polarization camera is equipped for polarization detection during polarization detection tests.The results show that the data of polarization degree and radiation luminance obtained by the two polarization instruments have good consistency,and the validity of the data obtained by POSP in polarization detection tests is preliminarily verified,which can provide an effective basis for the inversion of atmospheric aerosol parameters in the later stage.