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在景象匹配定位系统中,采用下视的方式获得地面图像。由于受飞行载体空间的限制,有时需要采取航向随动、滚动俯仰捷联方案。这样获取的地面图像只是纵轴与地理坐标保持一致,存在着飞行载体的俯仰、滚动等姿态导致的畸变,需对图像进行姿态畸变校正。这里给出航向随动控制调整角α与姿态角(φ,,γ)的数学关系以及姿态畸变校正的基本公式。
In the scene matching positioning system, using the bottom of the way to obtain the ground image. Due to the space constraints of the flight carrier, it is sometimes necessary to take a heading follow-up and roll-pitch program. The ground image obtained in this way is only that the vertical axis is consistent with the geographical coordinates, and there is distortion caused by pitch, roll and other attitude of the flight carrier, and the image needs to be corrected for attitude distortion. Here, we give the mathematical relationship between the attitude control angle a and the attitude angle (φ, , γ) and the basic formula of attitude distortion correction.