基于前视跑道图像的飞机偏心距精确测量

胡丙华

doi:doi:10.5768/jao201637.0403006

应用光学, 2016, 37 (4): 590, 网络出版: 2016-08-29

基于前视跑道图像的飞机偏心距精确测量

Accurate measurement of departure distance from aircraft to runway centerline based on images of forward-looking runway

论文大纲

胡丙华 ^*

作者单位

中国飞行试验研究院, 陕西西安 710089

摘要

根据飞机地面最小操纵速度试飞的光电测试需求, 提出一种基于前视跑道图像的飞机偏心距精确测量技术, 通过在飞机中后段机腹中心线上加装前视高速数字摄像机, 获取飞机运动时跑道及飞机起落架的前视序列图像, 通过图像判读获取飞机主起连线与跑道标识线交点的亚像素坐标, 在摄像机测量参数高精度标定的基础上, 根据摄影测量的单站定位原理精确解算交点在物方空间坐标系下的坐标, 进而获取飞机偏离跑道中心线的距离。飞行试验测试结果表明, 该测量方案切实可行, 数据直观可靠, 可实现3 cm的测量精度, 完全满足试飞测试任务需求。

Abstract

According to the optoelectronic requirement of minimum control speed flight test for civil planes, an accurate measurement technology of department distance from aircraft to runway centerline based on images of forward-looking runway was proposed. A high-speed digital camera was mounted on the ventral centerline to obtain the forward-looking images of runway and aircraft landing gear of the running plane. With image interpretation, sub-pixels coordinates of intersection on aircraft main wheel connection and runway flag line were identified. With the high-accuracy calibration of camera measurement parameters and single-station location theory of photogrammetry, the object space coordinates of the intersection could be accurate calculated, and then the distance from aircraft to runway centerline could be obtained. The measurement result of flight tests shows that this measurement scheme is feasible, the measurement result is reliable, and the measurement accuracy of 3 cm can be realized, which can meet the requirements of flight tests.

参考文献

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胡丙华. 基于前视跑道图像的飞机偏心距精确测量[J]. 应用光学, 2016, 37(4): 590. Hu Binghua. Accurate measurement of departure distance from aircraft to runway centerline based on images of forward-looking runway[J]. Journal of Applied Optics, 2016, 37(4): 590.

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