A Robust Bio-Inspired Sensory orientation Processing Technique for Polarization Compass Overcoming Weak Polarization Characteristics

Seeking to tackle the interference of the abnormal pixels at the occlusion in the sky polarization pattern, the effective feature area conforming to the Rayleigh scattering model needs to be quickly acquired and utilized with higher quality and faster speed. A robust bio-inspired sensory orientation method for polarization compass is developed in this article. Our proposed method extracts the valid areas distributed in the sky polarization mode excellently, and reduces the influence of cloud coverage associated. With regard to the extracted polarization image, we innovatively use the bio-inspired visual cell of the hoverfly to enhance the details of the weak distribution of the occlusion. The state characteristics of the positive and negative feature points are preserved. As a result, the valid polarization pixels in the sky are utilized to a greater extent, leading to obtain the angle between the carrier and the solar more accurately, so as to meet the real-time high-precision navigation requirements of the polarization compass overcoming weak polarization characteristics.