Influence of field of view alignment on division of time polarimetry accuracy

Nearly all polarization measurement suffers from field of view (FOV) misalignment. FOV misalignment would result in discrepancy between the polarization measurement to the target and actual polarization information, named artificial polarization. Instrument and the platform (plane or satellite) movement are the main factors resulting in FOV misalignment of division of time polarization measurement. First of all, the principle of polarization measurement was discussed. The reason of FOV alignment influencing on polarimetry accuracy was described. Then the method on measurement on FOV alignment was proposed on reviewing and summarizing domestic and international current research. After that, factors on influence of FOV alignment space borne and the compensate effect were analyzed in detail.Finally, the discussion on a imaging Polarimeter was shown. Results indicate that FOV misalignment caused by satellite is decreased after compensation. Polarimetry accuracy was increased.