基于高速相机阵列的起飞着陆段航迹测量技术

Flight Path Measurement Technology of Takeoff and Landing Period Based on High Speed Camera Array

摘要:

针对基于GPS的飞机起降性能测试关键段轨迹细节信息描述不清晰、测量精度低的问题,提出一种利用高速相机阵列对飞机的起飞着陆运动过程进行接力拍摄,通过对各站点高速相机拍摄到的图像序列进行分析处理,得到飞机上标志点在图像坐标系中的坐标,利用近景数字摄影测量中三维直接线性变换(DLT)等算法,解算出飞机的位置及速度数据的方法。介绍了该方法涉及的数学模型及其推导过程,并利用坐标观测量数据进行解算,试验证明了该方法有效。

Abstract:

In view of the problems that the less detail information and low measurement accuracy of the key section of track got by GPS in the test aircraft take off and landing performance test, a new method was proposed, which using an array of high-speed camera to capture aircraft take off and landing movement image, sequence of image analysis and processing was used to get the coordinates of marking point on the plane in the image coordinate system, and the theory of three-dimensional direct linear transformation was used to calculate the position and velovity data of the aircraft. The mathematical model and its derivation process was introduced, and several test with observed coordinate data was taken, which showed that this method was effective.