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。 Proposed a new method to determine the type of aircraft. Through the plane appearance and structure characteristics, the relationship between the plane projection and the aircraft attitude angle is established by using the space projection theory. Through this relational equation, the aircraft attitude angle is effectively identified. Using the error between the projected image features of the existing aircraft model and those of the actual aircraft flight images, the model matching is performed according to the minimum variance. The result of image simulation using CCD system shows that the proposed method is effective.