Optimal polarized light field rapid orientation method and device of bionic polarized light compass

The invention relates to a method and a device for quickly orienting an optimal polarized light field of a bionic polarized light compass. The method comprises the following steps: establishing a mapping relation between a sky measurement point and a compass pixel point according to a carrier attitude and a projection relation of a camera; selecting a plurality of polarization measurement points corresponding to the circular area in the acquired polarization image according to the mapping relation; respectively calculating brightness mean values of pixels in 0-degree, 45-degree, 90-degree and 135-degree directions of the offset measurement point, calculating a polarization angle by adopting a Stokes method according to the brightness mean values, and taking the polarization angle as a solar azimuth angle in a horizontal coordinate system; obtaining a solar azimuth angle under a navigation coordinate system by searching an astronomical calendar; and according to the solar azimuth angle in the navigation coordi