基于摄影测量的飞机阻力伞运动参数测量技术  

Investigation of departure distance measurement from aircraft based on images analysis

作　　者：冯巧宁[1] 吴立巍[1] 

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《电子设计工程》2015年第12期86-90,94,共6页Electronic Design Engineering

摘　　要：针对某型阻力伞性能鉴定试飞科目要求,需要精确测量阻力伞在稳定工作时的垂直、水平摆角,从而为该产品的技术鉴定提供依据。本文根据加装在飞机机背中段的高速摄像机,获取阻力伞的运动影像,通过图像分析处理识别特征点的亚象素坐标,采用摄影测量的解算算法,推导出数学解算模型,实现了阻力伞运动参数的最优解算。结合真实飞行试验对测量结果进行了分析,数据结论准确。According to the special requirement of performance evaluating for a certain decelerated umbrella,it is necessary to determine its horizontal and vertical tilt angles when it is in the stable station. These parameters are the essential judgment. A high-speed digital camera is mount on the ventral centerline of the aircraft to obtain the Image sequences of the decelerated umbrella when it moves. Throughout high-accuracy image processing, the characteristic marks painted on the decelerated umbrella are high-accurately tracked and identified based on sub-pixel. A mathematical model is derived and a monocular measurement is implemented to get the optimal solution. The analysis is made by the measurement results in flight tests, which showed the correctness of the measurement results.

关 键 词：阻力伞 高速数字摄像机 序列影像 运动参数 飞行测试 

分 类 号：TN29[电子电信—物理电子学]