摘要
提出了一种确定飞机类型的新方法。通过飞机外型和结构特征 ,利用空间投影理论建立了飞机投影图形与飞机姿态角之间的关系。通过该关系方程 ,有效地识别了飞机姿态角。利用已有的飞机模型的投影图特征与实际飞机飞行图象特征之间的误差 ,根据最小方差进行了模型匹配。利用 CCD系统图象仿真结果表明 ,所提出的方法是有效的。
A new approach for the determination of the type of an aircraft is developed in this paper. By means of choosing a distinguishable characteristic curves of the structure of an aircraft, the angle relationship between the projection figure and the x , y ,z ground axes of an aircraft is set up. According to the angle equations, a maximum likelihood method can be used for the identification of the position angles of an aircraft. Thus the type of an aircraft can be determined by minimizing square errors of outline. Moreover, a simulation by CCD system is made and the result shows that the new method is efficient to fit the figure outlines.
出处
《飞行力学》
CSCD
北大核心
2000年第2期81-84,共4页
Flight Dynamics
基金
航空科学基金! ( 97F53 0 52 )
"2 1 1"工程项目资助
关键词
图像匹配
飞机外形识别
特征提取
曲线投影
figure outline fit
identification of aircraft
character choosing
curve projection
