Research on the effect of vibration of aerial cameras on imaging quality under flight conditions

Abstract In order to make the structural design of the aerial camera meet the requirements of the imaging system, the influence of externally excited vibration interference on the imaging quality of the aerial camera optical system under the flying state of the UAV was studied. This paper adopts the optical-machine integrated analysis method (OIAM) to cause the vibration interference influence is studied. The MTF (modulation transfer function) is used as an evaluation index of imaging quality. The aerial camera dynamics simulation analysis is performed to extract the displacement of each node under vibration excitation. The lens deformation is fitted using the Fringe Zernike polynomial. The obtained data were used for optical performance evaluation. The analysis have showed that the optical system of the aerial camera has a 0.071% reduction in the MTF at a resolution of 91 lp / mm under the excitation of flight vibration, with little effect.