| 内容提要: |
In complex aeronautical and space engineering systems, conventional sensors used for environment perception fail to determine the orientation because of the influences of the special environments, wherein geomagnetic fields are exceptional and the Global Positioning System is unavailable. This report presents a fisheye-lens-based visual sun compass that is efficient in determining orientation in such applications. The mathematical model and its application method are described in detail. In comparison with conventional sensors, the proposed visual sun compass can provide absolute orientation with a tiny size and light weight in especial environments. |