基于描述像空间坐标与物理空间坐标之间关系的共线方程出发，推导出模型攻角关于相机外方位元素的计算公式。在单相机攻角测量中模型表面被测点展向坐标Y不变的假设成立条件下，研究了相机和模型振动对攻角测量结果的影响。分析了相机位于5个不同位置时三个角外方位元素(φ, ω, κ)在-2.0o~2.0o之间振动和侧滑角β在-2.0o~2.0o之间振动对攻角测量结果的影响。结果讨论表明，相机外方位元素φ，κ的振动对攻角测量结果影响较大，且该影响对攻角和模型位置的变化不敏感；在相机位于法向投影位置（相机光轴与Y轴平行）时，相机外方位元素ω与模型侧滑角β的振动对攻角测量结果影响非常小，但影响量随相机位置偏离法向投影位置迅速增加。
Expressions derivation of attack angle as the function of camera exterior orientation elements was presented on the basis of the collinearity equations providing a relationship between 2D coordinates in image plane and 3D coordinates in object space. On the hypothesis that spanwise coordinate Y of the targets on the model surface keeps constant in single-camera attack angle measurement, vibration effects of camera and model on the attack angle measurement were investigated. Effects of three angle exterior orientation elements (φ, ω, κ) vibrating from -2.0o to 2.0o and sideslip angle β vibrating from -2.0o to 2.0o at five different camera positions on model attack angle measurements were analyzed. Discussion on results shows that vibrations of φ and κ have an important influence on the attack angle measurement and the influence is not sensitive to attack angle and camera position while vibrations of ω and β have little influence on the attack measurement as camera is at normal projection position (optical axis of camera parallel with Y axis) but the influence increases fast as the camera position changes from the normal projection position.
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