Time sequence orthogonal target detection method and modular airborne polarization imaging system

The invention discloses a time sequence orthogonal target detection method and a modular airborne polarization imaging system, and relates to the field of target detection, N frames of original polarization images are acquired, and the difference between preset trigger angles corresponding to two adjacent frames of original polarization images is 90 degrees; processing each original polarization image group obtained by grouping according to a preset image registration strategy to obtain a corresponding registration polarization image group; the position coordinates of the to-be-determined area in each frame of polarization image of the registered polarization image group are the same, and processing each registered polarization image group according to a preset target highlighting strategy to detect a target. N frames of original polarization images with orthogonal time sequences are selected as data sources, so that the difference between a target and a background is increased, and the accuracy of target det