基于局部大气偏振特性的仿生导航方法

In the current mainstream polarization navigation algorithms, it is often necessary to obtain the polarization image of the whole sky, the solar meridian, and the neutral point before judging the navigation direction. In this paper, a new navigation direction acquisition algorithm is proposed, which can determine the navigation direction by fitting the sun direction vector in a small field of view. On this basis, computer simulation and outdoor experiments are carried out. The polarization distribution mode of the atmosphere in the zenith area is obtained by the polarization camera, and the distribution of the atmospheric polarization mode calculated by the Stokes vector analysis method, including the information of polarization degree and polarization angle. The feasibility and accuracy of the algorithm in the actual situation are verified, navigation accuracy can reach about 0.2°.