文档介绍：基于图像测量技术的飞机着陆段
运动参数测量
张建花1,党小宝2,邸兴3
(中国飞行试验研究院,西安,710089)、
摘要:本文介绍了利用数字高速像机对飞机着瞬间运动参数测量的方法。通过合理选取测量区域,布设测量站点,利用多台摄影机联合组网等措施扩展测量范围,解决了由于飞行员难以把握着陆点位置而失去对关键点的测量问题。同时,应用摄影测量原理,对高速像机进行标校,解算出其畸变参数,并获得正摄影像,进而对起落架机轮及机身测量标志进行基于亚像素的跟踪判读;对判读数据进行处理,得到了飞机着陆道面段的运动轨迹、速度等数据。结合真实飞行试验对测量结果进行了分析,数据结论准确。
关键字:摄影测量;飞行试验;高速像机;运动参数测量
中图法分类号:TP237 文献标志码:A 文章编号:
Motion Parameter Measurement of Aircraft in
Landing Process Based on Digitl Images
Zhang Jianhua1,Dang Xiaobao 2, Di Xing3
(Chinese Flight Test Establishment,xian,710089,China)
Abstract: The technique to measure the motion parameters of aircraft in its landing process by using high speed digital camera is presented. Proper measurement area was determined and appropriate measuring spots were located by analyzing the landing position statistics. Several cameras were used t o form work for expanding the measuring range, thus the pilot can judge the landing positi on properly. The camera parameters can be resolved by photogrammetry principles. Throughout image processing, the marks on the undercarriage wheels and airframe were high-accurately tracked and identified based on sub-pixel. The trace, velocity and other parameters of the undercarriage were gained by data processing. We made analysis to the measurement result in flight tests, which showed the correctness of the measurement results.
Key words: photogrammetry; high-speed digital