基于灭点理论的飞机着陆段姿态角测量

为了更好地解决目前飞行试验中飞机着陆时姿态角参数精确测量问题，基于灭点理论，根据飞机降落过程中机载摄像机所获取到的跑道面影像，提出利用跑道平行线解算飞机姿态角参数的新方法。论述了灭点与摄像机外方位角元素的函数关系，建立了基于灭点几何与直线几何约束条件进行姿态角参数解算的数学模型。试验结果表明，该方法切实可行，能够获得精确可靠的飞机着陆过程中姿态角数据。

Measurement of aircraft attitude angles based on vanishing point theory

In order to find a better solution for the current problem of accurate measurement of the attitude angles parameters in the flight landing test, a new method using parallel lines acquired from the images of the runway surface obtained by airborne camera during landing to calculate the aircraft attitude angles is proposed based on vanishing point theory. The functional relationship between vanish point and orientation angle elements is discussed, and the models of calculating the attitude angles parameters based on vanishing point geometry and line geometric constrains are presented. Experimental results show that the proposed approach is feasible in practice, and can obtain accurate and reliable measurement of aircraft attitude angles in landing.