基于高速像机阵列的起飞着陆段航迹测量技术

Flight Path Measurement During Takeoff and Landing Phase Based-on High Speed Camera Array

针对GPS采样频率低、动态精度差的问题,为了在飞机起降性能测试课题中获取更高频率、更高精度的位置、速度等参数信息,利用高速像机阵列对飞机的起飞着陆运动过程进行接力拍摄,通过对各站点高速像机拍摄到的图像序列分析处理,利用数字图像处理技术、近景数字摄影测量三维直接线性变换(DLT)等算法,解算出了飞机的位置及速度数据。该方法对其他类似飞行物的轨迹测量具有指导意义。

The sampling frequency and accuracy of GPS information are very low. To get higher frequency and higher preci- sion of location and speed parameter, the motion process of the flight is taken by the high-speed camera array during the takeoff and landing phase. Through analyzing the image sequence, the position, velocity can be solved by digital image pro- cessing and 3-dimentional linear transformation. This method can get the position and velocity information of aircraft by pho- tos. And it can be a reference in aircraft trajectory measurement.