基于影像-位置序图的光学测姿方法

针对空中飞行目标姿态测量问题,提出一种新的光学测姿实现方法,对光学多站测姿实施复杂、单站测姿成像要求高等问题进行改进。该方法充分利用了目标飞行连续影像信息和相应的外弹道位置数据,首先通过目标位置数据确定目标轴线向量起点,根据轴线向量终点的约束方程确定向量终点;然后通过偏航角、俯仰角与轴线向量起点、终点的关系,解算目标姿态角;最后通过姿态连续变化的先验信息,确定解算结果的唯一值。仿真计算和精度分析表明,可实现测姿误差总体小于1°,表明提出的方法兼顾了便捷性和测量精度,具有较高工程应用价值。

Optical method for pose measurement based on image-position sequence image

To solve the existing problems such as multi-station setting complexly and high single station accuracy demanding in pose measurement of flying targets, a new optical method for pose measurement was proposed. The method made full use of the continuous image information and the corresponding target flight trajectory position data. First, starting point of target axis vector was determined by the target location data, and also the end point was acquired by the constraint equations of target axis vector. Then, the pose angles (including the yaw angle and pitch angle) could be calculated according to the relationship between the pose angles and the axial vector. Finally, the unique pose value could be obtained by the prior information. The corresponding simulation and accuracy analysis were performed, and the results show that the attitude measurement error is less than 1°, and the method proposed in this paper considering both the convenience and accuracy of measurement, has high application value.